diff --git a/doc/api/commits.md b/doc/api/commits.md
index 5c98c5d7565b..55d0de7afd93 100644
--- a/doc/api/commits.md
+++ b/doc/api/commits.md
@@ -10,7 +10,7 @@ GET /projects/:id/repository/commits
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id` | integer | yes | The ID of a project |
+| `id`      | integer | yes | The ID of a project or NAMESPACE/PROJECT_NAME owned by the authenticated user
 | `ref_name` | string | no | The name of a repository branch or tag or if not given the default branch |
 | `since` | string | no | Only commits after or in this date will be returned in ISO 8601 format YYYY-MM-DDTHH:MM:SSZ |
 | `until` | string | no | Only commits before or in this date will be returned in ISO 8601 format YYYY-MM-DDTHH:MM:SSZ |
@@ -58,7 +58,7 @@ Parameters:
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id` | integer | yes | The ID of a project |
+| `id`      | integer | yes | The ID of a project or NAMESPACE/PROJECT_NAME owned by the authenticated user
 | `sha` | string | yes | The commit hash or name of a repository branch or tag |
 
 ```bash
@@ -102,7 +102,7 @@ Parameters:
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id` | integer | yes | The ID of a project |
+| `id`      | integer | yes | The ID of a project or NAMESPACE/PROJECT_NAME owned by the authenticated user
 | `sha` | string | yes | The commit hash or name of a repository branch or tag |
 
 ```bash
@@ -138,7 +138,7 @@ Parameters:
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id` | integer | yes | The ID of a project |
+| `id`      | integer | yes | The ID of a project or NAMESPACE/PROJECT_NAME owned by the authenticated user
 | `sha` | string | yes | The commit hash or name of a repository branch or tag |
 
 ```bash
@@ -187,7 +187,7 @@ POST /projects/:id/repository/commits/:sha/comments
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id`        | integer | yes | The ID of a project |
+| `id`      | integer | yes | The ID of a project or NAMESPACE/PROJECT_NAME owned by the authenticated user
 | `sha`       | string  | yes | The commit SHA or name of a repository branch or tag |
 | `note`      | string  | yes | The text of the comment |
 | `path`      | string  | no  | The file path relative to the repository |
@@ -232,7 +232,7 @@ GET /projects/:id/repository/commits/:sha/statuses
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id`      | integer | yes | The ID of a project
+| `id`      | integer | yes | The ID of a project or NAMESPACE/PROJECT_NAME owned by the authenticated user
 | `sha`     | string  | yes | The commit SHA
 | `ref_name`| string  | no  | The name of a repository branch or tag or, if not given, the default branch
 | `stage`   | string  | no  | Filter by [build stage](../ci/yaml/README.md#stages), e.g., `test`
@@ -306,7 +306,7 @@ POST /projects/:id/statuses/:sha
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id`      | integer | yes   | The ID of a project
+| `id`      | integer | yes | The ID of a project or NAMESPACE/PROJECT_NAME owned by the authenticated user
 | `sha`     | string  | yes   | The commit SHA
 | `state`   | string  | yes   | The state of the status. Can be one of the following: `pending`, `running`, `success`, `failed`, `canceled`
 | `ref`     | string  | no    | The `ref` (branch or tag) to which the status refers
diff --git a/doc/api/projects.md b/doc/api/projects.md
index 0e4806e31c51..22c3d416107a 100644
--- a/doc/api/projects.md
+++ b/doc/api/projects.md
@@ -489,7 +489,7 @@ PUT /projects/:id
 
 Parameters:
 
-- `id` (required) - The ID of a project
+- `id` (required) - The ID or NAMESPACE/PROJECT_NAME of a project
 - `name` (optional) - project name
 - `path` (optional) - repository name for project
 - `description` (optional) - short project description
@@ -519,7 +519,7 @@ POST /projects/fork/:id
 
 Parameters:
 
-- `id` (required) - The ID of the project to be forked
+- `id` (required) - The ID or NAMESPACE/PROJECT_NAME of the project to be forked
 
 ### Star a project
 
@@ -532,7 +532,7 @@ POST /projects/:id/star
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id`      | integer | yes | The ID of the project |
+| `id`      | integer | yes | The ID of the project or NAMESPACE/PROJECT_NAME |
 
 ```bash
 curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/5/star"
@@ -599,7 +599,7 @@ DELETE /projects/:id/star
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id`      | integer | yes | The ID of the project |
+| `id`      | integer | yes | The ID of the project or NAMESPACE/PROJECT_NAME |
 
 ```bash
 curl --request DELETE --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/5/star"
@@ -670,7 +670,7 @@ POST /projects/:id/archive
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id`      | integer | yes | The ID of the project |
+| `id`      | integer | yes | The ID of the project or NAMESPACE/PROJECT_NAME |
 
 ```bash
 curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/archive"
@@ -757,7 +757,7 @@ POST /projects/:id/unarchive
 
 | Attribute | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
-| `id`      | integer | yes | The ID of the project |
+| `id`      | integer | yes | The ID of the project or NAMESPACE/PROJECT_NAME |
 
 ```bash
 curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v3/projects/unarchive"
@@ -839,7 +839,7 @@ DELETE /projects/:id
 
 Parameters:
 
-- `id` (required) - The ID of a project
+- `id` (required) - The ID or NAMESPACE/PROJECT_NAME of the project to be forked
 
 ## Uploads
 
@@ -853,7 +853,7 @@ POST /projects/:id/uploads
 
 Parameters:
 
-- `id` (required) - The ID of the project
+- `id` (required) - The ID or NAMESPACE/PROJECT_NAME of the project to be forked
 - `file` (required) - The file to be uploaded
 
 ```json
@@ -882,7 +882,7 @@ POST /projects/:id/share
 
 Parameters:
 
-- `id` (required) - The ID of a project
+- `id` (required) - The ID or NAMESPACE/PROJECT_NAME of the project to be forked
 - `group_id` (required) - The ID of a group
 - `group_access` (required) - Level of permissions for sharing
 
@@ -1114,7 +1114,7 @@ POST /projects/:id/fork/:forked_from_id
 
 Parameters:
 
-- `id` (required) - The ID of the project
+- `id` (required) - The ID or NAMESPACE/PROJECT_NAME of the project to be forked
 - `forked_from_id:` (required) - The ID of the project that was forked from
 
 ### Delete an existing forked from relationship
@@ -1125,7 +1125,7 @@ DELETE /projects/:id/fork
 
 Parameter:
 
-- `id` (required) - The ID of the project
+- `id` (required) - The ID or NAMESPACE/PROJECT_NAME of the project to be forked
 
 ## Search for projects by name