diff --git a/robot/resources/lib/neofs.py b/robot/resources/lib/neofs.py
index 28a2454d..be3be6e9 100644
--- a/robot/resources/lib/neofs.py
+++ b/robot/resources/lib/neofs.py
@@ -12,6 +12,7 @@ import random
 import base64
 import base58
 import docker
+import json
 
 if os.getenv('ROBOT_PROFILE') == 'selectel_smoke':
     from selectelcdn_smoke_vars import (NEOGO_CLI_PREFIX, NEO_MAINNET_ENDPOINT,
@@ -612,151 +613,252 @@ def search_object(private_key: str, cid: str, keys: str, bearer: str, filters: s
         raise Exception("command '{}' return with error (code {}): {}".format(e.cmd, e.returncode, e.output))
 
     
+@keyword('Verify Split Chain')
+def verify_split_chain(private_key: str, cid: str, oid: str):
+
+    header_virtual_parsed = dict()
+    header_last_parsed = dict()
+
+    marker_last_obj = 0
+    marker_link_obj = 0
+
+    final_verif_data = dict()
+
+    # Get Latest object
+    logger.info("Collect Split objects information and verify chain of the objects.")
+    nodes = _get_storage_nodes(private_key)
+    for node in nodes:
+        header_virtual = head_object(private_key, cid, oid, '', '', '--raw --ttl 1', node, True)
+        parsed_header_virtual = parse_object_virtual_raw_header(header_virtual)
+        
+        if 'Last object' in parsed_header_virtual.keys():
+            header_last = head_object(private_key, cid, parsed_header_virtual['Last object'], '', '', '--raw')
+            header_last_parsed = parse_object_system_header(header_last)
+            marker_last_obj = 1 
+
+            # Recursive chain validation up to the first object
+            final_verif_data = _verify_child_link(private_key, cid, oid, header_last_parsed, final_verif_data)
+            break
+      
+    if marker_last_obj == 0:
+        raise Exception("Latest object has not been found.")
+
+    # Get Linking object
+    logger.info("Compare Split objects result information with Linking object.")
+    for node in nodes:
+
+        header_virtual = head_object(private_key, cid, oid, '', '', '--raw --ttl 1', node, True)
+        parsed_header_virtual = parse_object_virtual_raw_header(header_virtual)
+        if 'Linking object' in parsed_header_virtual.keys():
+
+            header_link = head_object(private_key, cid, parsed_header_virtual['Linking object'], '', '', '--raw')
+            header_link_parsed = parse_object_system_header(header_link)
+            marker_link_obj = 1
+
+            reversed_list = final_verif_data['ID List'][::-1]
+
+            if header_link_parsed['Split ChildID'] == reversed_list:
+                logger.info("Split objects list from Linked Object is equal to expected %s" % ', '.join(header_link_parsed['Split ChildID']))
+            else:
+                raise Exception("Split objects list from Linking Object (%s) is not equal to expected (%s)" % ', '.join(header_link_parsed['Split ChildID']), ', '.join(reversed_list) )
+
+            if int(header_link_parsed['PayloadLength']) == 0:
+                logger.info("Linking object Payload is equal to expected - zero size.")
+            else:
+                raise Exception("Linking object Payload is not equal to expected. Should be zero.")
+
+            if header_link_parsed['Type'] == 'regular':
+                logger.info("Linking Object Type is 'regular' as expected.")
+            else:
+                raise Exception("Object Type is not 'regular'.")
+           
+            if header_link_parsed['Split ID'] == final_verif_data['Split ID']:
+                logger.info("Linking Object Split ID is equal to expected %s." % final_verif_data['Split ID'] )
+            else:
+                raise Exception("Split ID from Linking Object (%s) is not equal to expected (%s)" % header_link_parsed['Split ID'], ffinal_verif_data['Split ID'] )
+
+            break
+
+    if marker_link_obj == 0:
+        raise Exception("Linked object has not been found.")
+
+
+    logger.info("Compare Split objects result information with Virtual object.")
+
+    header_virtual = head_object(private_key, cid, oid, '', '', '')
+    header_virtual_parsed = parse_object_system_header(header_virtual)
+
+    if int(header_virtual_parsed['PayloadLength']) == int(final_verif_data['PayloadLength']):
+        logger.info("Split objects PayloadLength are equal to Virtual Object Payload %s" % header_virtual_parsed['PayloadLength'])
+    else:
+        raise Exception("Split objects PayloadLength from Virtual Object (%s) is not equal to expected (%s)" % header_virtual_parsed['PayloadLength'], final_verif_data['PayloadLength'] )
+
+    if header_link_parsed['Type'] == 'regular':
+        logger.info("Virtual Object Type is 'regular' as expected.")
+    else:
+        raise Exception("Object Type is not 'regular'.")
+
+    return 1
+
+
+def _verify_child_link(private_key: str, cid: str, oid: str, header_last_parsed: dict, final_verif_data: dict):
+
+    if 'PayloadLength' in final_verif_data.keys():
+        final_verif_data['PayloadLength'] = int(final_verif_data['PayloadLength']) + int(header_last_parsed['PayloadLength'])
+    else: 
+        final_verif_data['PayloadLength'] = int(header_last_parsed['PayloadLength'])
+
+    if header_last_parsed['Type'] != 'regular':
+        raise Exception("Object Type is not 'regular'.")
+
+    if 'Split ID' in final_verif_data.keys():
+        if final_verif_data['Split ID'] != header_last_parsed['Split ID']:
+             raise Exception("Object Split ID (%s) is not expected (%s)." % header_last_parsed['Split ID'], final_verif_data['Split ID'])
+    else:
+        final_verif_data['Split ID'] = header_last_parsed['Split ID']
+    
+    if 'ID List' in final_verif_data.keys():
+        final_verif_data['ID List'].append(header_last_parsed['ID'])
+    else: 
+        final_verif_data['ID List'] = []
+        final_verif_data['ID List'].append(header_last_parsed['ID'])
+
+    if 'Split PreviousID' in header_last_parsed.keys(): 
+        header_virtual = head_object(private_key, cid, header_last_parsed['Split PreviousID'], '', '', '--raw')
+        parsed_header_virtual = parse_object_system_header(header_virtual)
+         
+        final_verif_data = _verify_child_link(private_key, cid, oid, parsed_header_virtual, final_verif_data)
+    else:
+        logger.info("Chain of the objects has been parsed from the last object ot the first.")
+    
+    return final_verif_data
+
 
-'''
 @keyword('Verify Head Tombstone')
-def verify_head_tombstone(private_key: str, cid: str, oid: str):
+def verify_head_tombstone(private_key: str, cid: str, oid_ts: str, oid: str, addr: str):
 
-    ObjectCmd = f'neofs-cli --rpc-endpoint {NEOFS_ENDPOINT} --key {private_key} object head --cid {cid} --oid {oid} --full-headers'
+    ObjectCmd = f'neofs-cli --rpc-endpoint {NEOFS_ENDPOINT} --key {private_key} object head --cid {cid} --oid {oid_ts} --json'
     logger.info("Cmd: %s" % ObjectCmd)
+   
     try:
         complProc = subprocess.run(ObjectCmd, check=True, universal_newlines=True,
                     stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=15, shell=True)
-        logger.info("Output: %s" % complProc.stdout)
+        
 
-        if re.search(r'Type=Tombstone\s+Value=MARKED', complProc.stdout):
-            logger.info("Tombstone header 'Type=Tombstone Value=MARKED' was parsed from command output")
+        full_headers = json.loads(complProc.stdout)
+        logger.info("Output: %s" % full_headers)
+
+        # Header verification
+        header_cid = full_headers["header"]["containerID"]["value"]
+        if (_json_cli_decode(header_cid) == cid):
+            logger.info("Header CID is expected: %s (%s in the output)" % (cid, header_cid))
         else:
-            raise Exception("Tombstone header 'Type=Tombstone Value=MARKED' was not found in the command output: \t%s" % (complProc.stdout))
+            raise Exception("Header CID is not expected.")
+
+        header_owner = full_headers["header"]["ownerID"]["value"]
+        if (_json_cli_decode(header_owner) == addr):
+            logger.info("Header ownerID is expected: %s (%s in the output)" % (addr, header_owner))
+        else:
+            raise Exception("Header ownerID is not expected.")
+
+        header_type = full_headers["header"]["objectType"]
+        if (header_type == "TOMBSTONE"):
+            logger.info("Header Type is expected: %s" % header_type)
+        else:
+            raise Exception("Header Type is not expected.")
+
+        header_session_type = full_headers["header"]["sessionToken"]["body"]["object"]["verb"]
+        if (header_session_type == "DELETE"):
+            logger.info("Header Session Type is expected: %s" % header_session_type)
+        else:
+            raise Exception("Header Session Type is not expected.")
+
+        header_session_cid = full_headers["header"]["sessionToken"]["body"]["object"]["address"]["containerID"]["value"]
+        if (_json_cli_decode(header_session_cid) == cid):
+            logger.info("Header ownerID is expected: %s (%s in the output)" % (addr, header_session_cid))
+        else:
+            raise Exception("Header Session CID is not expected.")
+
+        header_session_oid = full_headers["header"]["sessionToken"]["body"]["object"]["address"]["objectID"]["value"]
+        if (_json_cli_decode(header_session_oid) == oid):
+            logger.info("Header Session OID (deleted object) is expected: %s (%s in the output)" % (oid, header_session_oid))
+        else:
+            raise Exception("Header Session OID (deleted object) is not expected.")
 
     except subprocess.CalledProcessError as e:
         raise Exception("command '{}' return with error (code {}): {}".format(e.cmd, e.returncode, e.output))
 
-@keyword('Verify linked objects')
-def verify_linked_objects(private_key: bytes, cid: str, oid: str, payload_size: float):
-
-    payload_size = int(float(payload_size))
-
-    # Get linked objects from first
-    postfix = f'object head --cid {cid} --oid {oid} --full-headers'
-    output = _exec_cli_cmd(private_key, postfix)
-    child_obj_list = []
-
-    for m in re.finditer(r'Type=Child ID=([\w-]+)', output):
-        child_obj_list.append(m.group(1))
-
-    if not re.search(r'PayloadLength=0', output):
-        raise Exception("Payload is not equal to zero in the parent object %s." % obj)
-
-    if not child_obj_list:
-        raise Exception("Child objects was not found.")
-    else:
-        logger.info("Child objects: %s" % child_obj_list)
-
-    # HEAD and validate each child object:
-    payload = 0
-    parent_id = "00000000-0000-0000-0000-000000000000"
-    first_obj = None
-    child_obj_list_headers = {}
-
-    for obj in child_obj_list:
-        postfix = f'object head --cid {cid} --oid {obj} --full-headers'
-        output = _exec_cli_cmd(private_key, postfix)
-        child_obj_list_headers[obj] = output
-        if re.search(r'Type=Previous ID=00000000-0000-0000-0000-000000000000', output):
-            first_obj = obj
-            logger.info("First child object %s has been found" % first_obj)
-
-    if not first_obj:
-        raise Exception("Can not find first object with zero Parent ID.")
-    else:
-
-        _check_linked_object(first_obj, child_obj_list_headers, payload_size, payload, parent_id)
-
-    return child_obj_list_headers.keys()
-
-
-def _check_linked_object(obj:str, child_obj_list_headers:dict, payload_size:int, payload:int, parent_id:str):
-
-    output = child_obj_list_headers[obj]
-    logger.info("Verify headers of the child object %s" % obj)
-
-    if not re.search(r'Type=Previous ID=%s' % parent_id, output):
-        raise Exception("Incorrect previos ID %s in the child object %s." % parent_id, obj)
-    else:
-        logger.info("Previous ID is equal for expected: %s" % parent_id)
-
-    m = re.search(r'PayloadLength=(\d+)', output)
-    if m.start() != m.end():
-        payload += int(m.group(1))
-    else:
-        raise Exception("Can not get payload for the object %s." % obj)
-
-    if payload > payload_size:
-        raise Exception("Payload exceeds expected total payload %s." % payload_size)
-
-    elif payload == payload_size:
-        if not re.search(r'Type=Next ID=00000000-0000-0000-0000-000000000000', output):
-            raise Exception("Incorrect previos ID in the last child object %s." % obj)
-        else:
-            logger.info("Next ID is correct for the final child object: %s" % obj)
-
-    else:
-        m = re.search(r'Type=Next ID=([\w-]+)', output)
-        if m:
-            # next object should be in the expected list
-            logger.info(m.group(1))
-            if m.group(1) not in child_obj_list_headers.keys():
-                raise Exception(f'Next object {m.group(1)} is not in the expected list: {child_obj_list_headers.keys()}.')
-            else:
-                logger.info(f'Next object {m.group(1)} is in the expected list: {child_obj_list_headers.keys()}.')
-
-            _check_linked_object(m.group(1), child_obj_list_headers, payload_size, payload, obj)
-
-        else:
-            raise Exception("Can not get Next object ID for the object %s." % obj)
-
-'''
 
+def _json_cli_decode(data: str):
+    return base58.b58encode(base64.b64decode(data)).decode("utf-8")
 
 @keyword('Head object')
-def head_object(private_key: str, cid: str, oid: str, bearer: str, user_headers:str=""):
+def head_object(private_key: str, cid: str, oid: str, bearer_token: str="", user_headers:str="", keys:str="", endpoint: str="", ignore_failure: bool = False):
     options = ""
 
-    bearer_token = ""
-    if bearer:
-        bearer_token = f"--bearer {bearer}"
+    if bearer_token:
+        bearer_token = f"--bearer {bearer_token}"
 
-    ObjectCmd = f'neofs-cli --rpc-endpoint {NEOFS_ENDPOINT} --key {private_key} object head --cid {cid} --oid {oid} {bearer_token} {options}'
+    if endpoint == "":
+        endpoint = NEOFS_ENDPOINT
+
+    ObjectCmd = f'neofs-cli --rpc-endpoint {endpoint} --key {private_key} object head --cid {cid} --oid {oid} {bearer_token} {keys}'
     logger.info("Cmd: %s" % ObjectCmd)
     try:
         complProc = subprocess.run(ObjectCmd, check=True, universal_newlines=True,
                     stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=15, shell=True)
         logger.info("Output: %s" % complProc.stdout)
 
-        for key in user_headers.split(","):
-        #    user_header = f'Key={key} Val={user_headers_dict[key]}'
-            if re.search(r'(%s)' % key, complProc.stdout):
-                logger.info("User header %s was parsed from command output" % key)
-            else:
-                raise Exception("User header %s was not found in the command output: \t%s" % (key, complProc.stdout))
+        if user_headers:
+            for key in user_headers.split(","):
+                if re.search(r'(%s)' % key, complProc.stdout):
+                    logger.info("User header %s was parsed from command output" % key) 
+                else:
+                    raise Exception("User header %s was not found in the command output: \t%s" % (key, complProc.stdout))
 
         return complProc.stdout
 
     except subprocess.CalledProcessError as e:
-        raise Exception("command '{}' return with error (code {}): {}".format(e.cmd, e.returncode, e.output))
+        if ignore_failure:
+            logger.info("command '{}' return with error (code {}): {}".format(e.cmd, e.returncode, e.output))
+            return e.output
+        else:
+            raise Exception("command '{}' return with error (code {}): {}".format(e.cmd, e.returncode, e.output))
 
 
+@keyword('Parse Object Virtual Raw Header')
+def parse_object_virtual_raw_header(header: str):
+    # Header - Optional attributes
+    
+    result_header = dict()
+
+    m = re.search(r'Split ID:\s+([\w-]+)', header)
+    if m != None:
+        if m.start() != m.end(): # e.g., if match found something
+            result_header['Split ID'] = m.group(1)
+
+    m = re.search(r'Linking object:\s+(\w+)', header)
+    if m != None:
+        if m.start() != m.end(): # e.g., if match found something
+            result_header['Linking object'] = m.group(1)
+
+    m = re.search(r'Last object:\s+(\w+)', header)
+    if m != None:
+        if m.start() != m.end(): # e.g., if match found something
+            result_header['Last object'] = m.group(1)
+
+    logger.info("Result: %s" % result_header)
+    return result_header
 
 
 @keyword('Parse Object System Header')
 def parse_object_system_header(header: str):
     result_header = dict()
+    
+    # Header - Constant attributes
 
-    #SystemHeader
-    logger.info("Input: %s" % header)
     # ID
-    m = re.search(r'ID: (\w+)', header)
+    m = re.search(r'^ID: (\w+)', header)
     if m.start() != m.end(): # e.g., if match found something
         result_header['ID'] = m.group(1)
     else:
@@ -775,20 +877,7 @@ def parse_object_system_header(header: str):
         result_header['OwnerID'] = m.group(1)
     else:
         raise Exception("no OwnerID was parsed from object header: \t%s" % output)
-    # PayloadLength
-    m = re.search(r'Size: (\d+)', header)
-    if m.start() != m.end(): # e.g., if match found something
-        result_header['PayloadLength'] = m.group(1)
-    else:
-        raise Exception("no PayloadLength was parsed from object header: \t%s" % output)
-
-    # CreatedAtUnixTime
-    m = re.search(r'Timestamp=(\d+)', header)
-    if m.start() != m.end(): # e.g., if match found something
-        result_header['CreatedAtUnixTime'] = m.group(1)
-    else:
-        raise Exception("no CreatedAtUnixTime was parsed from object header: \t%s" % output)
-
+    
     # CreatedAtEpoch
     m = re.search(r'CreatedAt: (\d+)', header)
     if m.start() != m.end(): # e.g., if match found something
@@ -796,9 +885,61 @@ def parse_object_system_header(header: str):
     else:
         raise Exception("no CreatedAtEpoch was parsed from object header: \t%s" % output)
 
+    # PayloadLength
+    m = re.search(r'Size: (\d+)', header)
+    if m.start() != m.end(): # e.g., if match found something
+        result_header['PayloadLength'] = m.group(1)
+    else:
+        raise Exception("no PayloadLength was parsed from object header: \t%s" % output)
+
+    # HomoHash
+    m = re.search(r'HomoHash:\s+(\w+)', header)
+    if m.start() != m.end(): # e.g., if match found something
+        result_header['HomoHash'] = m.group(1)
+    else:
+        raise Exception("no HomoHash was parsed from object header: \t%s" % output)
+
+    # Checksum
+    m = re.search(r'Checksum:\s+(\w+)', header)
+    if m.start() != m.end(): # e.g., if match found something
+        result_header['Checksum'] = m.group(1)
+    else:
+        raise Exception("no Checksum was parsed from object header: \t%s" % output)
+
+    # Type
+    m = re.search(r'Type:\s+(\w+)', header)
+    if m.start() != m.end(): # e.g., if match found something
+        result_header['Type'] = m.group(1)
+    else:
+        raise Exception("no Type was parsed from object header: \t%s" % output)
+
+
+    # Header - Optional attributes
+    m = re.search(r'Split ID:\s+([\w-]+)', header)
+    if m != None:
+        if m.start() != m.end(): # e.g., if match found something
+            result_header['Split ID'] = m.group(1)
+
+    m = re.search(r'Split PreviousID:\s+(\w+)', header)
+    if m != None:
+        if m.start() != m.end(): # e.g., if match found something
+            result_header['Split PreviousID'] = m.group(1)
+
+    m = re.search(r'Split ParentID:\s+(\w+)', header)
+    if m != None:
+        if m.start() != m.end(): # e.g., if match found something
+            result_header['Split ParentID'] = m.group(1)
+
+    # Split ChildID list
+    found_objects = re.findall(r'Split ChildID:\s+(\w+)', header)
+    if found_objects:
+        result_header['Split ChildID'] = found_objects
+
+
     logger.info("Result: %s" % result_header)
     return result_header
 
+
 @keyword('Delete object')
 def delete_object(private_key: str, cid: str, oid: str, bearer: str):
 
@@ -812,6 +953,10 @@ def delete_object(private_key: str, cid: str, oid: str, bearer: str):
         complProc = subprocess.run(ObjectCmd, check=True, universal_newlines=True,
                     stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=30, shell=True)
         logger.info("Output: %s" % complProc.stdout)
+
+        tombstone = _parse_oid(complProc.stdout)
+        return tombstone
+
     except subprocess.CalledProcessError as e:
         raise Exception("command '{}' return with error (code {}): {}".format(e.cmd, e.returncode, e.output))
 
@@ -1029,7 +1174,7 @@ def _search_object(node:str, private_key: str, cid:str, oid: str):
         if re.search(r'local node is outside of object placement', e.output):
             logger.info("Server is not presented in container.")
 
-        elif ( re.search(r'timed out after 30 seconds', e.output) or re.search(r'no route to host', e.output) ):
+        elif ( re.search(r'timed out after 30 seconds', e.output) or re.search(r'no route to host', e.output) or re.search(r'i/o timeout', e.output)):
             logger.warn("Node is unavailable")
 
         else:
diff --git a/robot/resources/lib/neofs_int_vars.py b/robot/resources/lib/neofs_int_vars.py
index a97619d9..f003a8d8 100644
--- a/robot/resources/lib/neofs_int_vars.py
+++ b/robot/resources/lib/neofs_int_vars.py
@@ -3,10 +3,11 @@ import os
 
 NEOFS_ENDPOINT = "s01.neofs.devenv:8080"
 NEOGO_CLI_PREFIX = "docker exec -it main_chain neo-go"
-NEO_MAINNET_ENDPOINT = "main_chain.neofs.devenv:30333"
+NEO_MAINNET_ENDPOINT = "http://main_chain.neofs.devenv:30333"
 
-NEOFS_NEO_API_ENDPOINT = 'http://main_chain.neofs.devenv:30333'
+NEOFS_NEO_API_ENDPOINT = 'http://morph_chain.neofs.devenv:30333'
 HTTP_GATE = 'http://http.neofs.devenv'
 S3_GATE = 'https://s3.neofs.devenv:8080'
-NEOFS_CONTRACT = "5f490fbd8010fd716754073ee960067d28549b7d"
-NEOFS_NETMAP = ['s01.neofs.devenv:8080', 's02.neofs.devenv:8080','s03.neofs.devenv:8080','s04.neofs.devenv:8080']
\ No newline at end of file
+NEOFS_NETMAP = ['s01.neofs.devenv:8080', 's02.neofs.devenv:8080','s03.neofs.devenv:8080','s04.neofs.devenv:8080']
+
+GAS_HASH = '0xb5df804bbadefea726afb5d3f4e8a6f6d32d2a20'
\ No newline at end of file
diff --git a/robot/resources/lib/payment_neogo.py b/robot/resources/lib/payment_neogo.py
index 2de451ea..5be6d42a 100644
--- a/robot/resources/lib/payment_neogo.py
+++ b/robot/resources/lib/payment_neogo.py
@@ -15,14 +15,14 @@ import robot.errors
 from robot.libraries.BuiltIn import BuiltIn
 
 ROBOT_AUTO_KEYWORDS = False
-NEOFS_CONTRACT = "5f490fbd8010fd716754073ee960067d28549b7d"
+NEOFS_CONTRACT = "ce96811ca25577c058484dab10dd8db2defc5eed"
 
 if os.getenv('ROBOT_PROFILE') == 'selectel_smoke':
     from selectelcdn_smoke_vars import (NEOGO_CLI_PREFIX, NEO_MAINNET_ENDPOINT,
-    NEOFS_NEO_API_ENDPOINT, NEOFS_ENDPOINT)
+    NEOFS_NEO_API_ENDPOINT, NEOFS_ENDPOINT, GAS_HASH)
 else:
     from neofs_int_vars import (NEOGO_CLI_PREFIX, NEO_MAINNET_ENDPOINT,
-    NEOFS_NEO_API_ENDPOINT, NEOFS_ENDPOINT)
+    NEOFS_NEO_API_ENDPOINT, NEOFS_ENDPOINT, GAS_HASH)
 
 
 @keyword('Init wallet')
@@ -98,8 +98,8 @@ def dump_privkey(wallet: str, address: str):
 
 @keyword('Transfer Mainnet Gas')
 def transfer_mainnet_gas(wallet: str, address: str, address_to: str, amount: int, wallet_pass:str=''):
-    cmd = ( f"{NEOGO_CLI_PREFIX} wallet nep5 transfer -w {wallet} -r {NEOFS_NEO_API_ENDPOINT} --from {address} "
-            f"--to {address_to} --token gas --amount {amount}" )  
+    cmd = ( f"{NEOGO_CLI_PREFIX} wallet nep17 transfer -w {wallet} -r {NEO_MAINNET_ENDPOINT} --from {address} "
+            f"--to {address_to} --token GAS --amount {amount}" )  
 
     logger.info(f"Executing command: {cmd}")
     out = _run_sh_with_passwd(wallet_pass, cmd)
@@ -112,7 +112,7 @@ def transfer_mainnet_gas(wallet: str, address: str, address_to: str, amount: int
 
 @keyword('Withdraw Mainnet Gas')
 def withdraw_mainnet_gas(wallet: str, address: str, scripthash: str, amount: int):
-    cmd = ( f"{NEOGO_CLI_PREFIX} contract invokefunction -w {wallet} -a {address} -r {NEOFS_NEO_API_ENDPOINT} "
+    cmd = ( f"{NEOGO_CLI_PREFIX} contract invokefunction -w {wallet} -a {address} -r {NEO_MAINNET_ENDPOINT} "
             f"{NEOFS_CONTRACT} withdraw {scripthash} int:{amount}  -- {scripthash}" )
 
     logger.info(f"Executing command: {cmd}")
@@ -129,16 +129,18 @@ def withdraw_mainnet_gas(wallet: str, address: str, scripthash: str, amount: int
 
 @keyword('Mainnet Balance')
 def mainnet_balance(address: str):
-    request = 'curl -X POST '+NEO_MAINNET_ENDPOINT+' --cacert ca/nspcc-ca.pem -H \'Content-Type: application/json\' -d \'{ "jsonrpc": "2.0", "id": 5, "method": "getnep5balances", "params": [\"'+address+'\"] }\''
-    logger.info(f"Executing request: {request}")
 
-    complProc = subprocess.run(request, check=True, universal_newlines=True,
-            stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=15, shell=True)
+    headers = {'Content-type': 'application/json'}
+    data = { "jsonrpc": "2.0", "id": 5, "method": "getnep17balances", "params": [ address ] }
+    response = requests.post(NEO_MAINNET_ENDPOINT, json=data, headers=headers, verify=False)
 
-    out = complProc.stdout
-    logger.info(out)
+    if not response.ok:
+        raise Exception(f"""Failed:
+                request: {data},
+                response: {response.text},
+                status code: {response.status_code} {response.reason}""")
 
-    m = re.search(r'"668e0c1f9d7b70a99dd9e06eadd4c784d641afbc","amount":"([\d\.]+)"', out)
+    m = re.search(rf'"{GAS_HASH}","amount":"([\d\.]+)"', response.text)
     if not m.start() != m.end():
         raise Exception("Can not get mainnet gas balance.")
 
@@ -150,16 +152,16 @@ def mainnet_balance(address: str):
 @keyword('Expexted Mainnet Balance')
 def expected_mainnet_balance(address: str, expected: float):
     amount = mainnet_balance(address)
-
-    if float(amount) != float(expected):
-        raise Exception(f"Expected amount ({expected}) of GAS has not been found. Found {amount}.")
+    gas_expected = int(expected * 10**8)
+    if int(amount) != int(gas_expected):
+        raise Exception(f"Expected amount ({gas_expected}) of GAS has not been found. Found {amount}.")
 
     return True
 
 @keyword('NeoFS Deposit')
 def neofs_deposit(wallet: str, address: str, scripthash: str, amount: int, wallet_pass:str=''):
     cmd = ( f"{NEOGO_CLI_PREFIX} contract invokefunction -w {wallet} -a {address} "
-            f"-r {NEOFS_NEO_API_ENDPOINT} {NEOFS_CONTRACT} "
+            f"-r {NEO_MAINNET_ENDPOINT} {NEOFS_CONTRACT} "
             f"deposit {scripthash} int:{amount} bytes: -- {scripthash}")
 
     logger.info(f"Executing command: {cmd}")
@@ -185,20 +187,21 @@ def transaction_accepted_in_block(tx_id):
 
     logger.info("Transaction id: %s" % tx_id)
 
-    TX_request = 'curl -X POST '+NEO_MAINNET_ENDPOINT+' --cacert ca/nspcc-ca.pem -H \'Content-Type: application/json\' -d \'{ "jsonrpc": "2.0", "id": 5, "method": "gettransactionheight", "params": [\"'+ tx_id +'\"] }\''
+    headers = {'Content-type': 'application/json'}
+    data = { "jsonrpc": "2.0", "id": 5, "method": "gettransactionheight", "params": [ tx_id ] }
+    response = requests.post(NEO_MAINNET_ENDPOINT, json=data, headers=headers, verify=False)
 
-    logger.info(f"Executing command: {TX_request}")
+    if not response.ok:
+        raise Exception(f"""Failed:
+                request: {data},
+                response: {response.text},
+                status code: {response.status_code} {response.reason}""")
 
-    complProc = subprocess.run(TX_request, check=True, universal_newlines=True,
-            stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=15, shell=True)
-    logger.info(complProc.stdout)
-    response = json.loads(complProc.stdout)
-
-    if (response['result'] == 0):
+    if (response.text == 0):
         raise Exception( "Transaction is not found in the blocks." )
 
-    logger.info("Transaction has been found in the block %s." % response['result'] )
-    return response['result']
+    logger.info("Transaction has been found in the block %s." % response.text )
+    return response.text
 
 @keyword('Get Transaction')
 def get_transaction(tx_id: str):
@@ -208,10 +211,18 @@ def get_transaction(tx_id: str):
     :param tx_id:           transaction id
     """
 
-    TX_request = 'curl -X POST '+NEO_MAINNET_ENDPOINT+' --cacert ca/nspcc-ca.pem -H \'Content-Type: application/json\' -d \'{ "jsonrpc": "2.0", "id": 5, "method": "getapplicationlog", "params": [\"'+tx_id+'\"] }\''
-    complProc = subprocess.run(TX_request, check=True, universal_newlines=True,
-            stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=15, shell=True)
-    logger.info(complProc.stdout)
+    headers = {'Content-type': 'application/json'}
+    data = { "jsonrpc": "2.0", "id": 5, "method": "getapplicationlog", "params": [ tx_id ] }
+    response = requests.post(NEO_MAINNET_ENDPOINT, json=data, headers=headers, verify=False)
+
+    if not response.ok:
+        raise Exception(f"""Failed:
+                request: {data},
+                response: {response.text},
+                status code: {response.status_code} {response.reason}""")
+    else:
+        logger.info(response.text)
+
 
 @keyword('Get Balance')
 def get_balance(privkey: str):
diff --git a/robot/resources/lib/selectelcdn_smoke_vars.py b/robot/resources/lib/selectelcdn_smoke_vars.py
index eb2e6998..64aa7387 100644
--- a/robot/resources/lib/selectelcdn_smoke_vars.py
+++ b/robot/resources/lib/selectelcdn_smoke_vars.py
@@ -8,5 +8,6 @@ NEO_MAINNET_ENDPOINT = "http://92.53.71.51:20332"
 NEOFS_NEO_API_ENDPOINT = "http://92.53.71.51:20332"
 HTTP_GATE = 'http://92.53.71.51:38080'
 S3_GATE = 'https://92.53.71.51:28080'
-NEOFS_CONTRACT = "5f490fbd8010fd716754073ee960067d28549b7d"
-NEOFS_NETMAP = ['92.53.71.51:18080', '92.53.71.52:18080','92.53.71.53:18080','92.53.71.54:18080', '92.53.71.55:18080']
\ No newline at end of file
+NEOFS_NETMAP = ['92.53.71.51:18080', '92.53.71.52:18080','92.53.71.53:18080','92.53.71.54:18080', '92.53.71.55:18080']
+
+GAS_HASH = '668e0c1f9d7b70a99dd9e06eadd4c784d641afbc'
\ No newline at end of file
diff --git a/robot/testsuites/integration/acl_bearer.robot b/robot/testsuites/integration/acl_bearer.robot
index 5cdf34b6..1a23e702 100644
--- a/robot/testsuites/integration/acl_bearer.robot
+++ b/robot/testsuites/integration/acl_bearer.robot
@@ -344,7 +344,9 @@ Check eACL Deny and Allow All Bearer Filter UserHeader Equal
                             Run Keyword And Expect Error        *
                             ...  Head object                    ${USER_KEY}    ${CID}        ${S_OID_USER_2}          bearer_allow_all_user               
 
-                            Delete object                       ${USER_KEY}    ${CID}        ${S_OID_USER}            bearer_allow_all_user
+                            # Delete can not be filtered by UserHeader.
+                            Run Keyword And Expect Error        *
+                            ...  Delete object                       ${USER_KEY}    ${CID}        ${S_OID_USER}            bearer_allow_all_user
                             Run Keyword And Expect Error        *
                             ...  Delete object                  ${USER_KEY}    ${CID}        ${S_OID_USER_2}          bearer_allow_all_user
 
diff --git a/robot/testsuites/integration/object_complex.robot b/robot/testsuites/integration/object_complex.robot
index e290b64e..4a9739be 100644
--- a/robot/testsuites/integration/object_complex.robot
+++ b/robot/testsuites/integration/object_complex.robot
@@ -39,28 +39,22 @@ NeoFS Complex Object Operations
                         Container Existing                  ${PRIV_KEY}    ${CID}
                         
                         Wait Until Keyword Succeeds         2 min          30 sec
-                        ...  Expected Balance               ${PRIV_KEY}    50            -0.0007
+                        ...  Expected Balance               ${PRIV_KEY}    50            -7e-08
 
     ${SIZE} =           Set Variable	                    20e+6
     ${FILE} =           Generate file of bytes              ${SIZE}
     ${FILE_HASH} =      Get file hash                       ${FILE}
 
-
     ${S_OID} =          Put object to NeoFS                 ${PRIV_KEY}    ${FILE}       ${CID}            ${EMPTY}         ${EMPTY}  
     ${H_OID} =          Put object to NeoFS                 ${PRIV_KEY}    ${FILE}       ${CID}            ${EMPTY}         ${FILE_USR_HEADER} 
-    ${H_OID_OTH} =      Put object to NeoFS                 ${PRIV_KEY}    ${FILE}       ${CID}            ${EMPTY}         ${FILE_USR_HEADER_OTH}
+    ${H_OID_OTH} =      Put object to NeoFS                 ${PRIV_KEY}    ${FILE}       ${CID}            ${EMPTY}         ${FILE_USR_HEADER_OTH}   
+
+    Should Be True     '${S_OID}'!='${H_OID}' and '${H_OID}'!='${H_OID_OTH}'
 
                         Validate storage policy for object  ${PRIV_KEY}    2             ${CID}         ${S_OID}    
                         Validate storage policy for object  ${PRIV_KEY}    2             ${CID}         ${H_OID}  
                         Validate storage policy for object  ${PRIV_KEY}    2             ${CID}         ${H_OID_OTH}  
 
-
-#   @{Link_obj_S} =     Verify linked objects               ${PRIV_KEY}    ${CID}         ${S_OID}       ${SIZE}
-#   @{Link_obj_H} =     Verify linked objects               ${PRIV_KEY}    ${CID}         ${H_OID}       ${SIZE}
-#   @{Full_obj_list} =	Create List                         @{Link_obj_S}  @{Link_obj_H}  ${S_OID}       ${H_OID}
-#                       Search object                       ${PRIV_KEY}    ${CID}         ${EMPTY}       ${EMPTY}      @{Full_obj_list} 
-
-
     @{S_OBJ_ALL} =	    Create List	                        ${S_OID}       ${H_OID}     ${H_OID_OTH}   
     @{S_OBJ_H} =	    Create List	                        ${H_OID}
     @{S_OBJ_H_OTH} =    Create List	                        ${H_OID_OTH}
@@ -86,12 +80,16 @@ NeoFS Complex Object Operations
                         
                         Head object                         ${PRIV_KEY}    ${CID}        ${S_OID}          ${EMPTY}             
                         Head object                         ${PRIV_KEY}    ${CID}        ${H_OID}          ${EMPTY}       ${FILE_USR_HEADER}
-                          
-                        Delete object                       ${PRIV_KEY}    ${CID}        ${S_OID}          ${EMPTY}
-                        Delete object                       ${PRIV_KEY}    ${CID}        ${H_OID}          ${EMPTY}
+       
+                        Verify Split Chain                  ${PRIV_KEY}    ${CID}        ${S_OID}
+                        Verify Split Chain                  ${PRIV_KEY}    ${CID}        ${H_OID}
+
+    ${TOMBSTONE_S} =    Delete object                       ${PRIV_KEY}    ${CID}        ${S_OID}          ${EMPTY}
+    ${TOMBSTONE_H} =    Delete object                       ${PRIV_KEY}    ${CID}        ${H_OID}          ${EMPTY}
+
+                        Verify Head tombstone               ${PRIV_KEY}    ${CID}        ${TOMBSTONE_S}     ${S_OID}    ${ADDR}
+                        Verify Head tombstone               ${PRIV_KEY}    ${CID}        ${TOMBSTONE_H}     ${H_OID}    ${ADDR}
 
-                        #Verify Head tombstone               ${PRIV_KEY}    ${CID}        ${S_OID}
-                        
                         Sleep                               2min
                         
                         Run Keyword And Expect Error        *       
diff --git a/robot/testsuites/integration/object_simple.robot b/robot/testsuites/integration/object_simple.robot
index fba23fcb..6dd19700 100644
--- a/robot/testsuites/integration/object_simple.robot
+++ b/robot/testsuites/integration/object_simple.robot
@@ -38,7 +38,7 @@ NeoFS Simple Object Operations
                         Container Existing                  ${PRIV_KEY}    ${CID}
                         
                         Wait Until Keyword Succeeds         2 min          30 sec
-                        ...  Expected Balance               ${PRIV_KEY}    50            -0.0007
+                        ...  Expected Balance               ${PRIV_KEY}    50            -7e-08
 
     ${FILE} =           Generate file of bytes              1024
     ${FILE_HASH} =      Get file hash                       ${FILE}
@@ -75,9 +75,11 @@ NeoFS Simple Object Operations
                         Head object                         ${PRIV_KEY}    ${CID}        ${S_OID}            ${EMPTY}             
                         Head object                         ${PRIV_KEY}    ${CID}        ${H_OID}            ${EMPTY}       ${FILE_USR_HEADER}
                           
-                        Delete object                       ${PRIV_KEY}    ${CID}        ${S_OID}            ${EMPTY}
-                        Delete object                       ${PRIV_KEY}    ${CID}        ${H_OID}            ${EMPTY}
-                        #Verify Head tombstone              ${PRIV_KEY}    ${CID}        ${S_OID}
+    ${TOMBSTONE_S} =    Delete object                       ${PRIV_KEY}    ${CID}        ${S_OID}            ${EMPTY}
+    ${TOMBSTONE_H} =    Delete object                       ${PRIV_KEY}    ${CID}        ${H_OID}            ${EMPTY}
+     
+                        Verify Head tombstone               ${PRIV_KEY}    ${CID}        ${TOMBSTONE_S}     ${S_OID}    ${ADDR}
+                        Verify Head tombstone               ${PRIV_KEY}    ${CID}        ${TOMBSTONE_H}     ${H_OID}    ${ADDR}
 
                         Sleep                               2min
                         
diff --git a/robot/testsuites/integration/withdraw.robot b/robot/testsuites/integration/withdraw.robot
index ce610ae8..a96062b5 100644
--- a/robot/testsuites/integration/withdraw.robot
+++ b/robot/testsuites/integration/withdraw.robot
@@ -30,7 +30,7 @@ NeoFS Deposit and Withdraw
                             
                             Sleep                                 1 min
 
-                            Expexted Mainnet Balance              ${ADDR}                4.86192020
+                            Expexted Mainnet Balance              ${ADDR}                4.84454920 
     ${NEOFS_BALANCE} =      Get Balance                           ${PRIV_KEY}            
 
     ${TX} =                 Withdraw Mainnet Gas                  ${WALLET}              ${ADDR}    ${SCRIPT_HASH}    50
@@ -40,6 +40,5 @@ NeoFS Deposit and Withdraw
                             Sleep                                 1 min
                             Get Balance                           ${PRIV_KEY}   
                             Expected Balance                      ${PRIV_KEY}            ${NEOFS_BALANCE}    -50
-                            Expexted Mainnet Balance              ${ADDR}                54.82554860
-     
-                                     
+                            Expexted Mainnet Balance              ${ADDR}                54.80800160
+     
\ No newline at end of file