# Change a project member's role (PUT)

PUT`/v1/project-members/{user_id}/{project_id}`[Token scope: `projects:write`](https://developers.tasksmate.indrasol.com/guides/authentication/#scopes)Deprecated — use [project-members.update](https://developers.tasksmate.indrasol.com/reference/operations/project-membersupdate/)

Request

**curl**


```bash
curl -X PUT "https://tasksmate-fdfsarhnf5gacfb7.eastus-01.azurewebsites.net/v1/project-members/<user_id>/<project_id>" \
  -H "Authorization: Bearer $TASKSMATE_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"project_id":"project-1234","user_id":"b3c1e2d4-1234-5678-9abc-def012345678"}'
```

**Python**


```python
from tasksmate import TasksMate

tm = TasksMate()  # reads TASKSMATE_TOKEN
result = tm.project_members.replace("<user_id>", "<project_id>", {"project_id": "project-1234", "user_id": "b3c1e2d4-1234-5678-9abc-def012345678"})
print(result)
```

Response 200

```json
{
  "project_id": "project-1234",
  "user_id": "b3c1e2d4-1234-5678-9abc-def012345678",
  "username": "john_doe",
  "designation": "developer",
  "designation_id": "DG0001",
  "role": "owner",
  "project_role": "editor",
  "created_by": "string",
  "updated_by": "string",
  "is_active": true,
  "created_at": "2026-09-25T12:00:00Z",
  "updated_at": "2026-09-25T12:00:00Z",
  "deleted_at": "2026-09-25T12:00:00Z",
  "delete_reason": "string"
}
```

**Use PATCH** (JSON merge-patch, the documented verb). PUT is the same partial update, kept for older clients.

## Authorizations

-   **[bearerAuth](https://developers.tasksmate.indrasol.com/reference/#bearerauth)**
-   **[TasksMateToken](https://developers.tasksmate.indrasol.com/reference/#tasksmatetoken)**

## Parameters

### Path Parameters

**user\_id**

required

_User Id_

string

**project\_id**

required

_Project Id_

string

### Header Parameters

**If-Match**

string

The `ETag` you read; a stale one is a 412 and nothing is written.

## Request Bodyrequired

application/json

_ProjectMemberUpdate_

The body of a project-member update. Every field is optional and omitted fields are left unchanged; `user_id` and `project_id` come from the path and need not be repeated.

object

**project\_id**

Any of:

**string**


string

**null**


null

**user\_id**

Any of:

**string**


string

**null**


null

**username**

Any of:

**string**


string

**null**


null

**designation**

Any of:

**string**


string

**null**


null

**designation\_id**

Any of:

**string**


string

**null**


null

**role**

Any of:

**string**


string

**null**


null

**project\_role**

Any of:

**ProjectRoleEnum**
_ProjectRoleEnum_

A member’s role on a project: `owner`, `editor` or `viewer`.

string

Allowed values: owner editor viewer

**null**


null

**created\_by**

Any of:

**string**


string

**null**


null

**updated\_by**

Any of:

**string**


string

**null**


null

**is\_active**

Any of:

**boolean**


boolean

**null**


null

**created\_at**

Any of:

**string**


string format: date-time

**null**


null

**updated\_at**

Any of:

**string**


string format: date-time

**null**


null

**deleted\_at**

Any of:

**string**


string format: date-time

**null**


null

**delete\_reason**

Any of:

**string**


string

**null**


null

Example

```json
{
  "project_id": "project-1234",
  "user_id": "b3c1e2d4-1234-5678-9abc-def012345678",
  "username": "john_doe",
  "designation": "developer",
  "designation_id": "DG0001",
  "role": "owner",
  "project_role": "editor",
  "created_by": "string",
  "updated_by": "string",
  "is_active": true,
  "created_at": "2026-09-25T12:00:00Z",
  "updated_at": "2026-09-25T12:00:00Z",
  "deleted_at": "2026-09-25T12:00:00Z",
  "delete_reason": "string"
}
```

## Responses

### 200

Successful Response

application/json

_ProjectMemberInDB_

Returned by `project-members.create`, `project-members.read`, `project-members.replace` and `project-members.update`.

object

**project\_id**

required

_Project Id_

Project ID (text)

string

**user\_id**

required

_User Id_

User ID (UUID)

string

**username**

Any of:

**string**


string

**null**


null

**designation**

Any of:

**string**


string

**null**


null

**designation\_id**

Any of:

**string**


string

**null**


null

**role**

Any of:

**string**


string

**null**


null

**project\_role**

Any of:

**ProjectRoleEnum**
_ProjectRoleEnum_

A member’s role on a project: `owner`, `editor` or `viewer`.

string

Allowed values: owner editor viewer

**null**


null

**created\_by**

Any of:

**string**


string

**null**


null

**updated\_by**

Any of:

**string**


string

**null**


null

**is\_active**

Any of:

**boolean**


boolean

**null**


null

**created\_at**

Any of:

**string**


string format: date-time

**null**


null

**updated\_at**

Any of:

**string**


string format: date-time

**null**


null

**deleted\_at**

Any of:

**string**


string format: date-time

**null**


null

**delete\_reason**

Any of:

**string**


string

**null**


null

Example

```json
{
  "project_id": "project-1234",
  "user_id": "b3c1e2d4-1234-5678-9abc-def012345678",
  "username": "john_doe",
  "designation": "developer",
  "designation_id": "DG0001",
  "role": "owner",
  "project_role": "editor",
  "created_by": "string",
  "updated_by": "string",
  "is_active": true,
  "created_at": "2026-09-25T12:00:00Z",
  "updated_at": "2026-09-25T12:00:00Z",
  "deleted_at": "2026-09-25T12:00:00Z",
  "delete_reason": "string"
}
```

### 400

Bad request — a query parameter outside what the operation accepts (`invalid-parameter`)

application/problem+json

_Problem_

An RFC 9457 problem details object — the body of every error response. `detail` is the human-readable explanation; `request_id` identifies the request for support.

object

**type**

required

`about:blank` or a `urn:tasksmate:problem:*` identifier

string

Allowed values: about:blank urn:tasksmate:problem:validation urn:tasksmate:problem:invalid-parameter urn:tasksmate:problem:precondition-failed urn:tasksmate:problem:idempotency-key-reused urn:tasksmate:problem:idempotency-key-in-flight urn:tasksmate:problem:idempotency-key-invalid urn:tasksmate:problem:rate-limit urn:tasksmate:problem:internal urn:tasksmate:problem:token-invalid urn:tasksmate:problem:token-expired urn:tasksmate:problem:token-revoked urn:tasksmate:problem:insufficient-scope urn:tasksmate:problem:test-token-read-only urn:tasksmate:problem:token-policy urn:tasksmate:problem:url-refused

**title**

required

string

**status**

required

integer

**detail**

required

Human-readable explanation (a string; for a 422, the list of validation errors)

**instance**

required

string

**request\_id**

required

string

**errors**

Structured failures: validation errors, or `{loc, msg, allowed}` for a bad parameter

Array<object>

object

Example

```json
{
  "type": "about:blank",
  "title": "Bad request",
  "status": 400,
  "detail": "…",
  "instance": "/v1/…",
  "request_id": "9b2f1c1e-8c1a-4a53-9f9e-0f5f1f2d7c11"
}
```

### 401

Missing or invalid bearer token

application/problem+json

_Problem_

An RFC 9457 problem details object — the body of every error response. `detail` is the human-readable explanation; `request_id` identifies the request for support.

object

**type**

required

`about:blank` or a `urn:tasksmate:problem:*` identifier

string

Allowed values: about:blank urn:tasksmate:problem:validation urn:tasksmate:problem:invalid-parameter urn:tasksmate:problem:precondition-failed urn:tasksmate:problem:idempotency-key-reused urn:tasksmate:problem:idempotency-key-in-flight urn:tasksmate:problem:idempotency-key-invalid urn:tasksmate:problem:rate-limit urn:tasksmate:problem:internal urn:tasksmate:problem:token-invalid urn:tasksmate:problem:token-expired urn:tasksmate:problem:token-revoked urn:tasksmate:problem:insufficient-scope urn:tasksmate:problem:test-token-read-only urn:tasksmate:problem:token-policy urn:tasksmate:problem:url-refused

**title**

required

string

**status**

required

integer

**detail**

required

Human-readable explanation (a string; for a 422, the list of validation errors)

**instance**

required

string

**request\_id**

required

string

**errors**

Structured failures: validation errors, or `{loc, msg, allowed}` for a bad parameter

Array<object>

object

Example

```json
{
  "type": "about:blank",
  "title": "Missing or invalid bearer token",
  "status": 401,
  "detail": "…",
  "instance": "/v1/…",
  "request_id": "9b2f1c1e-8c1a-4a53-9f9e-0f5f1f2d7c11"
}
```

### 403

Authenticated, but not allowed

application/problem+json

_Problem_

An RFC 9457 problem details object — the body of every error response. `detail` is the human-readable explanation; `request_id` identifies the request for support.

object

**type**

required

`about:blank` or a `urn:tasksmate:problem:*` identifier

string

Allowed values: about:blank urn:tasksmate:problem:validation urn:tasksmate:problem:invalid-parameter urn:tasksmate:problem:precondition-failed urn:tasksmate:problem:idempotency-key-reused urn:tasksmate:problem:idempotency-key-in-flight urn:tasksmate:problem:idempotency-key-invalid urn:tasksmate:problem:rate-limit urn:tasksmate:problem:internal urn:tasksmate:problem:token-invalid urn:tasksmate:problem:token-expired urn:tasksmate:problem:token-revoked urn:tasksmate:problem:insufficient-scope urn:tasksmate:problem:test-token-read-only urn:tasksmate:problem:token-policy urn:tasksmate:problem:url-refused

**title**

required

string

**status**

required

integer

**detail**

required

Human-readable explanation (a string; for a 422, the list of validation errors)

**instance**

required

string

**request\_id**

required

string

**errors**

Structured failures: validation errors, or `{loc, msg, allowed}` for a bad parameter

Array<object>

object

Example

```json
{
  "type": "about:blank",
  "title": "Authenticated, but not allowed",
  "status": 403,
  "detail": "…",
  "instance": "/v1/…",
  "request_id": "9b2f1c1e-8c1a-4a53-9f9e-0f5f1f2d7c11"
}
```

### 404

Not found

application/problem+json

_Problem_

An RFC 9457 problem details object — the body of every error response. `detail` is the human-readable explanation; `request_id` identifies the request for support.

object

**type**

required

`about:blank` or a `urn:tasksmate:problem:*` identifier

string

Allowed values: about:blank urn:tasksmate:problem:validation urn:tasksmate:problem:invalid-parameter urn:tasksmate:problem:precondition-failed urn:tasksmate:problem:idempotency-key-reused urn:tasksmate:problem:idempotency-key-in-flight urn:tasksmate:problem:idempotency-key-invalid urn:tasksmate:problem:rate-limit urn:tasksmate:problem:internal urn:tasksmate:problem:token-invalid urn:tasksmate:problem:token-expired urn:tasksmate:problem:token-revoked urn:tasksmate:problem:insufficient-scope urn:tasksmate:problem:test-token-read-only urn:tasksmate:problem:token-policy urn:tasksmate:problem:url-refused

**title**

required

string

**status**

required

integer

**detail**

required

Human-readable explanation (a string; for a 422, the list of validation errors)

**instance**

required

string

**request\_id**

required

string

**errors**

Structured failures: validation errors, or `{loc, msg, allowed}` for a bad parameter

Array<object>

object

Example

```json
{
  "type": "about:blank",
  "title": "Not found",
  "status": 404,
  "detail": "…",
  "instance": "/v1/…",
  "request_id": "9b2f1c1e-8c1a-4a53-9f9e-0f5f1f2d7c11"
}
```

### 409

Conflict (a duplicate, or an `Idempotency-Key` still in flight)

application/problem+json

_Problem_

An RFC 9457 problem details object — the body of every error response. `detail` is the human-readable explanation; `request_id` identifies the request for support.

object

**type**

required

`about:blank` or a `urn:tasksmate:problem:*` identifier

string

Allowed values: about:blank urn:tasksmate:problem:validation urn:tasksmate:problem:invalid-parameter urn:tasksmate:problem:precondition-failed urn:tasksmate:problem:idempotency-key-reused urn:tasksmate:problem:idempotency-key-in-flight urn:tasksmate:problem:idempotency-key-invalid urn:tasksmate:problem:rate-limit urn:tasksmate:problem:internal urn:tasksmate:problem:token-invalid urn:tasksmate:problem:token-expired urn:tasksmate:problem:token-revoked urn:tasksmate:problem:insufficient-scope urn:tasksmate:problem:test-token-read-only urn:tasksmate:problem:token-policy urn:tasksmate:problem:url-refused

**title**

required

string

**status**

required

integer

**detail**

required

Human-readable explanation (a string; for a 422, the list of validation errors)

**instance**

required

string

**request\_id**

required

string

**errors**

Structured failures: validation errors, or `{loc, msg, allowed}` for a bad parameter

Array<object>

object

Example

```json
{
  "type": "about:blank",
  "title": "Conflict (a duplicate, or an `Idempotency-Key` still in flight)",
  "status": 409,
  "detail": "…",
  "instance": "/v1/…",
  "request_id": "9b2f1c1e-8c1a-4a53-9f9e-0f5f1f2d7c11"
}
```

### 412

`If-Match` does not match the current `ETag`

application/problem+json

_Problem_

An RFC 9457 problem details object — the body of every error response. `detail` is the human-readable explanation; `request_id` identifies the request for support.

object

**type**

required

`about:blank` or a `urn:tasksmate:problem:*` identifier

string

Allowed values: about:blank urn:tasksmate:problem:validation urn:tasksmate:problem:invalid-parameter urn:tasksmate:problem:precondition-failed urn:tasksmate:problem:idempotency-key-reused urn:tasksmate:problem:idempotency-key-in-flight urn:tasksmate:problem:idempotency-key-invalid urn:tasksmate:problem:rate-limit urn:tasksmate:problem:internal urn:tasksmate:problem:token-invalid urn:tasksmate:problem:token-expired urn:tasksmate:problem:token-revoked urn:tasksmate:problem:insufficient-scope urn:tasksmate:problem:test-token-read-only urn:tasksmate:problem:token-policy urn:tasksmate:problem:url-refused

**title**

required

string

**status**

required

integer

**detail**

required

Human-readable explanation (a string; for a 422, the list of validation errors)

**instance**

required

string

**request\_id**

required

string

**errors**

Structured failures: validation errors, or `{loc, msg, allowed}` for a bad parameter

Array<object>

object

Example

```json
{
  "type": "about:blank",
  "title": "`If-Match` does not match the current `ETag`",
  "status": 412,
  "detail": "…",
  "instance": "/v1/…",
  "request_id": "9b2f1c1e-8c1a-4a53-9f9e-0f5f1f2d7c11"
}
```

### 422

The body or query did not validate (`validation`), or an `Idempotency-Key` was reused

application/problem+json

_Problem_

An RFC 9457 problem details object — the body of every error response. `detail` is the human-readable explanation; `request_id` identifies the request for support.

object

**type**

required

`about:blank` or a `urn:tasksmate:problem:*` identifier

string

Allowed values: about:blank urn:tasksmate:problem:validation urn:tasksmate:problem:invalid-parameter urn:tasksmate:problem:precondition-failed urn:tasksmate:problem:idempotency-key-reused urn:tasksmate:problem:idempotency-key-in-flight urn:tasksmate:problem:idempotency-key-invalid urn:tasksmate:problem:rate-limit urn:tasksmate:problem:internal urn:tasksmate:problem:token-invalid urn:tasksmate:problem:token-expired urn:tasksmate:problem:token-revoked urn:tasksmate:problem:insufficient-scope urn:tasksmate:problem:test-token-read-only urn:tasksmate:problem:token-policy urn:tasksmate:problem:url-refused

**title**

required

string

**status**

required

integer

**detail**

required

Human-readable explanation (a string; for a 422, the list of validation errors)

**instance**

required

string

**request\_id**

required

string

**errors**

Structured failures: validation errors, or `{loc, msg, allowed}` for a bad parameter

Array<object>

object

Example

```json
{
  "type": "about:blank",
  "title": "The body or query did not validate (`validation`), or an `Idempotency-Key` was reused",
  "status": 422,
  "detail": "…",
  "instance": "/v1/…",
  "request_id": "9b2f1c1e-8c1a-4a53-9f9e-0f5f1f2d7c11"
}
```

### 429

An access token over its per-minute limit (`rate-limit`; see `Retry-After`)

application/problem+json

_Problem_

An RFC 9457 problem details object — the body of every error response. `detail` is the human-readable explanation; `request_id` identifies the request for support.

object

**type**

required

`about:blank` or a `urn:tasksmate:problem:*` identifier

string

Allowed values: about:blank urn:tasksmate:problem:validation urn:tasksmate:problem:invalid-parameter urn:tasksmate:problem:precondition-failed urn:tasksmate:problem:idempotency-key-reused urn:tasksmate:problem:idempotency-key-in-flight urn:tasksmate:problem:idempotency-key-invalid urn:tasksmate:problem:rate-limit urn:tasksmate:problem:internal urn:tasksmate:problem:token-invalid urn:tasksmate:problem:token-expired urn:tasksmate:problem:token-revoked urn:tasksmate:problem:insufficient-scope urn:tasksmate:problem:test-token-read-only urn:tasksmate:problem:token-policy urn:tasksmate:problem:url-refused

**title**

required

string

**status**

required

integer

**detail**

required

Human-readable explanation (a string; for a 422, the list of validation errors)

**instance**

required

string

**request\_id**

required

string

**errors**

Structured failures: validation errors, or `{loc, msg, allowed}` for a bad parameter

Array<object>

object

Example

```json
{
  "type": "about:blank",
  "title": "An access token over its per-minute limit (`rate-limit`; see `Retry-After`)",
  "status": 429,
  "detail": "…",
  "instance": "/v1/…",
  "request_id": "9b2f1c1e-8c1a-4a53-9f9e-0f5f1f2d7c11"
}
```

### 500

Unexpected server error — quote `request_id`

application/problem+json

_Problem_

An RFC 9457 problem details object — the body of every error response. `detail` is the human-readable explanation; `request_id` identifies the request for support.

object

**type**

required

`about:blank` or a `urn:tasksmate:problem:*` identifier

string

Allowed values: about:blank urn:tasksmate:problem:validation urn:tasksmate:problem:invalid-parameter urn:tasksmate:problem:precondition-failed urn:tasksmate:problem:idempotency-key-reused urn:tasksmate:problem:idempotency-key-in-flight urn:tasksmate:problem:idempotency-key-invalid urn:tasksmate:problem:rate-limit urn:tasksmate:problem:internal urn:tasksmate:problem:token-invalid urn:tasksmate:problem:token-expired urn:tasksmate:problem:token-revoked urn:tasksmate:problem:insufficient-scope urn:tasksmate:problem:test-token-read-only urn:tasksmate:problem:token-policy urn:tasksmate:problem:url-refused

**title**

required

string

**status**

required

integer

**detail**

required

Human-readable explanation (a string; for a 422, the list of validation errors)

**instance**

required

string

**request\_id**

required

string

**errors**

Structured failures: validation errors, or `{loc, msg, allowed}` for a bad parameter

Array<object>

object

Example

```json
{
  "type": "about:blank",
  "title": "Unexpected server error",
  "status": 500,
  "detail": "…",
  "instance": "/v1/…",
  "request_id": "9b2f1c1e-8c1a-4a53-9f9e-0f5f1f2d7c11"
}
```

---
Source: https://developers.tasksmate.indrasol.com/reference/operations/project-membersreplace/