# doomContactAssignment

mutation · in the family [Contact assignment](/reference/contact-assignment/)

## What it does

Permanently retire a contact’s assignment to a record — who is the buyer on this vendor, the manager at this store.

Doom (terminal) a ContactAssignment by id; requires the unrestricted capability + the record's CURRENT revision. Deny-by-default + the referential_integrity / authority / occ guards; a doomed ContactAssignment is immutable + never deleted. The optional reason rides the transition events.

## Careful

Doom is forever — a doomed record never comes back into use (its history remains readable). Anything still referencing it live will block the doom.

## Who may call it

Capability area: **Purchasing** — Purchase orders, returns to vendors, vendor invoices and supplier records.

- Owner
- Manager
- Associate Manager
- An API key whose scope allows `api:doomContactAssignment`

## Arguments

| Name | Type | Required | Notes |
| --- | --- | --- | --- |
| `id` | [ID](/types/#scalars) `ID!` | yes | The id of the record. |
| `revision` | [ID](/types/#scalars) `ID!` | yes | The revision id you read on the record; the change is refused if an edit landed in the meantime. |
| `reason` | [String](/types/#scalars) | no | No further notes. |

## Returns

[ContactAssignment](/types/ContactAssignment/) `ContactAssignment!` — A contact assignment — ONE role-tagged attachment of a Contact to a HOST construct (org group / organization / logical facility / vendor / corporate customer). Parent = the HOST (the CollectionMember stance — hostId rides the header parentId). The (contact, host, role) triple is unique (a live duplicate is CONFLICT/IDENTITY_TAKEN naming the holder); REMOVE = doom (TWO_STATE — history preserved); re-assigning mints a NEW record via marker takeover. Role↔host applicability is registry DATA. At most 48 live assignments per host.

## Example request

```graphql
mutation ExampleDoomContactAssignment($id: ID!, $revision: ID!, $reason: String) {
  doomContactAssignment(id: $id, revision: $revision, reason: $reason) {
    id
    sysId
    type
    caption
    status
    parentId
    rootId
    createdAt
    updatedAt
    revisionNum
    revision
    contactId
    hostType
    role
  }
}
```

Variables:

```json
{
  "id": "01900000-0000-7000-8000-37386ae00000",
  "revision": "01900000-0000-7000-8000-b7960e180000",
  "reason": "Correcting a miscount."
}
```

Send it with the envelope naming the version: `"extensions": {"at": {"version": {"name":"genesis","number":0}}}`.

## Example response

```json
{
  "data": {
    "doomContactAssignment": {
      "id": "01900000-0000-7000-8000-37386ae00000",
      "sysId": "CA-EXMP-0000-000F",
      "type": "ContactAssignment",
      "caption": "Blue jeans",
      "status": "active",
      "parentId": "01900000-0000-7000-8000-065235280000",
      "rootId": "01900000-0000-7000-8000-a093dd800000",
      "createdAt": "2027-01-31T00:00:00.000Z",
      "updatedAt": "2027-01-31T00:00:00.000Z",
      "revisionNum": 1,
      "revision": "01900000-0000-7000-8000-b7960e180000",
      "contactId": "01900000-0000-7000-8000-4db757ce0000",
      "hostType": "organization_group",
      "role": "<role>"
    }
  },
  "extensions": {
    "at": {
      "callId": "01EXAMPLE-CALL-ID",
      "version": {
        "requested": {
          "name": "genesis",
          "number": 0
        },
        "serviced": {
          "name": "genesis",
          "number": 0
        }
      }
    }
  }
}
```

## Errors this call can answer

- `VALIDATION/INVALID` — Something in the request is not valid. ([VALIDATION](/errors/VALIDATION/))
- `AUTHN/REQUIRED` — Sign in to do this. ([AUTHN](/errors/AUTHN/))
- `AUTHZ/FORBIDDEN` — Your role does not allow this action. ([AUTHZ](/errors/AUTHZ/))
- `RATE_LIMIT/THROTTLED` — Too many requests in a short time. ([RATE_LIMIT](/errors/RATE_LIMIT/))
- `NOT_FOUND/*` — That record could not be found. ([NOT_FOUND](/errors/NOT_FOUND/))
- `CONFLICT/*` — The record’s state, or a change made in the meantime, does not allow this; the codes are on the CONFLICT page. ([CONFLICT](/errors/CONFLICT/))
- `VALIDATION/VERSION_REQUIRED` — The request did not say which app version it came from. ([VALIDATION](/errors/VALIDATION/))