diff --git a/proto-docs/netmap.md b/proto-docs/netmap.md
index 6a9ceb7..6bb58ed 100644
--- a/proto-docs/netmap.md
+++ b/proto-docs/netmap.md
@@ -352,6 +352,7 @@ storage policy definition languages.
| container_backup_factor | [uint32](#uint32) | | Container backup factor controls how deep NeoFS will search for nodes alternatives to include into container's nodes subset |
| selectors | [Selector](#neo.fs.v2.netmap.Selector) | repeated | Set of Selectors to form the container's nodes subset |
| filters | [Filter](#neo.fs.v2.netmap.Filter) | repeated | List of named filters to reference in selectors |
+| subnet_id | [neo.fs.v2.refs.SubnetID](#neo.fs.v2.refs.SubnetID) | | Subnetwork ID to select nodes from. Zero subnet (default) represents all of the nodes which didn't explicitly opt out of membership. |
diff --git a/proto-docs/refs.md b/proto-docs/refs.md
index d423de5..e9e46d9 100644
--- a/proto-docs/refs.md
+++ b/proto-docs/refs.md
@@ -12,6 +12,7 @@
- [ObjectID](#neo.fs.v2.refs.ObjectID)
- [OwnerID](#neo.fs.v2.refs.OwnerID)
- [Signature](#neo.fs.v2.refs.Signature)
+ - [SubnetID](#neo.fs.v2.refs.SubnetID)
- [Version](#neo.fs.v2.refs.Version)
@@ -149,6 +150,21 @@ Signature of something in NeoFS.
| sign | [bytes](#bytes) | | Signature |
+
+
+### Message SubnetID
+NeoFS subnetwork identifier.
+
+String representation of a value is base-10 integer.
+
+JSON representation is an object containing single `value` number field.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| value | [fixed32](#fixed32) | | 4-byte integer subnetwork identifier. |
+
+
### Message Version
diff --git a/proto-docs/session.md b/proto-docs/session.md
index 7fb532a..4e24e71 100644
--- a/proto-docs/session.md
+++ b/proto-docs/session.md
@@ -203,7 +203,7 @@ Information about the response
| ttl | [uint32](#uint32) | | Maximum number of intermediate nodes in the request route |
| x_headers | [XHeader](#neo.fs.v2.session.XHeader) | repeated | Response X-Headers |
| origin | [ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | `ResponseMetaHeader` of the origin request |
-| status | [neo.fs.v2.status.Status](#neo.fs.v2.status.Status) | | Status return. |
+| status | [neo.fs.v2.status.Status](#neo.fs.v2.status.Status) | | Status return |
diff --git a/proto-docs/status.md b/proto-docs/status.md
index 7df4ca0..c99e015 100644
--- a/proto-docs/status.md
+++ b/proto-docs/status.md
@@ -57,8 +57,8 @@ should make the return more detailed.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
-| code | [uint32](#uint32) | | The status code. |
-| message | [string](#string) | | Developer-facing error message. |
+| code | [uint32](#uint32) | | The status code |
+| message | [string](#string) | | Developer-facing error message |
| details | [Status.Detail](#neo.fs.v2.status.Status.Detail) | repeated | Data detailing the outcome of the operation. Must be unique by ID. |
@@ -86,7 +86,7 @@ Section of failed statuses independent of the operation.
| Name | Number | Description |
| ---- | ------ | ----------- |
-| INTERNAL | 0 | [**1024**] Internal server error, default failure. Not detailed.. If the server cannot match failed outcome to the code , it should use this code. |
+| INTERNAL | 0 | [**1024**] Internal server error, default failure. Not detailed. If the server cannot match failed outcome to the code, it should use this code. |
diff --git a/proto-docs/subnet.md b/proto-docs/subnet.md
new file mode 100644
index 0000000..a766dc6
--- /dev/null
+++ b/proto-docs/subnet.md
@@ -0,0 +1,61 @@
+# Protocol Documentation
+
+
+## Table of Contents
+
+- [subnet/types.proto](#subnet/types.proto)
+
+ - Messages
+ - [SubnetInfo](#neo.fs.v2.subnet.SubnetInfo)
+
+
+- [Scalar Value Types](#scalar-value-types)
+
+
+
+
+Top
+
+## subnet/types.proto
+
+
+
+
+
+
+
+### Message SubnetInfo
+NeoFS subnetwork description
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| id | [neo.fs.v2.refs.SubnetID](#neo.fs.v2.refs.SubnetID) | | Unique subnet identifier. Missing ID is equivalent to zero (default subnetwork) ID. |
+| owner | [neo.fs.v2.refs.OwnerID](#neo.fs.v2.refs.OwnerID) | | Identifier of the subnetwork owner |
+
+
+
+
+
+
+
+## Scalar Value Types
+
+| .proto Type | Notes | C++ Type | Java Type | Python Type |
+| ----------- | ----- | -------- | --------- | ----------- |
+| double | | double | double | float |
+| float | | float | float | float |
+| int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
+| int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
+| uint32 | Uses variable-length encoding. | uint32 | int | int/long |
+| uint64 | Uses variable-length encoding. | uint64 | long | int/long |
+| sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
+| sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
+| fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
+| fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
+| sfixed32 | Always four bytes. | int32 | int | int |
+| sfixed64 | Always eight bytes. | int64 | long | int/long |
+| bool | | bool | boolean | boolean |
+| string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
+| bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |
+