diff --git a/config/config.env b/config/config.env
index 0a2282c..5ae9915 100644
--- a/config/config.env
+++ b/config/config.env
@@ -124,8 +124,9 @@ S3_GW_PLACEMENT_POLICY_COPIES_NUMBERS_1_VECTOR=2 3 4
 S3_GW_CORS_DEFAULT_MAX_AGE=600
 
 # Parameters of requests to FrostFS
-# Number of the object copies to consider PUT to FrostFS successful.
-# If not set, default value 0 will be used -- it means that object will be processed according to the container's placement policy
+# Numbers of the object copies (for each replica, syntax the same as for `S3_GW_PLACEMENT_POLICY_COPIES_NUMBERS_0_VECTOR` above)
+# to consider PUT to FrostFS successful.
+# `0` or empty list means that object will be processed according to the container's placement policy
 S3_GW_FROSTFS_SET_COPIES_NUMBER=0
 
 # List of allowed AccessKeyID prefixes
diff --git a/config/config.yaml b/config/config.yaml
index e5f72d6..1b757dd 100644
--- a/config/config.yaml
+++ b/config/config.yaml
@@ -148,9 +148,9 @@ cors:
 
 # Parameters of requests to FrostFS
 frostfs:
-  # Number of the object copies to consider PUT to FrostFS successful.
-  # `0` means that object will be processed according to the container's placement policy
-  set_copies_number: 0
+  # Numbers of the object copies (for each replica) to consider PUT to FrostFS successful.
+  # `[0]` or empty list means that object will be processed according to the container's placement policy
+  set_copies_number: [0]
 
 # List of allowed AccessKeyID prefixes
 # If the parameter is omitted, S3 GW will accept all AccessKeyIDs
diff --git a/docs/configuration.md b/docs/configuration.md
index 454dd36..36724ee 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -502,16 +502,17 @@ prometheus:
 # `frostfs` section
 
 Contains parameters of requests to FrostFS.
-This value can be overridden with `X-Amz-Meta-Frostfs-Copies-Number` header for `PutObject`, `CopyObject`, `CreateMultipartUpload`.
+This value can be overridden with `X-Amz-Meta-Frostfs-Copies-Number` (value is comma separated numbers: `1,2,3`) 
+header for `PutObject`, `CopyObject`, `CreateMultipartUpload`.
 
 ```yaml
 frostfs:
-  set_copies_number: 0
+  set_copies_number: [0]
 ```
 
-| Parameter           | Type     | Default value | Description                                                                                                                                                                 |
-|---------------------|----------|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| `set_copies_number` | `uint32` | `0`           | Number of the object copies to consider PUT to FrostFS successful. <br/>Default value `0` means that object will be processed according to the container's placement policy |
+| Parameter           | Type       | Default value | Description                                                                                                                                                                                                     |
+|---------------------|------------|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `set_copies_number` | `[]uint32` | `[0]`         | Numbers of the object copies (for each replica) to consider PUT to FrostFS successful. <br/>Default value `[0]` or empty list means that object will be processed according to the container's placement policy |
 
 # `resolve_bucket` section