> ## Documentation index
> Fetch the complete documentation index at: https://developer.rhombus.com/llms.txt
> Use it to discover all available pages before exploring further.

# Assign controlled, unregistered hardware to a managed client

> MSP only. Pre-registers hardware under the MSP's PARTNER control that is not registered anywhere (shelf stock, or units unregistered from a previous client) to a managed client org, so each unit lands in that client when it comes online. A registered unit is refused (HARDWARE_NOT_AVAILABLE; move it with /hardware/moveToClient); a unit already pending to another client is refused (CONFLICT); one already pending to this client is reported as assigned without a second pending registration. Per-serial results; one failing serial never aborts the others. Errors: 400 VALIDATION_FAILED (missing toClientOrgUuid, 0 or more than 50 serials); 403 NOT_VERIFIED_MSP, NOT_MANAGED_CLIENT; LOCATION_NOT_FOUND when locationUuid is not in the client org.

```http
POST https://api2.rhombussystems.com/api/partner/hardware/assignToClient
```

EU organizations send the same request to `https://api2.eu.rhombussystems.com`.

## Authentication and parameters

- `x-auth-apikey` (header, required): Your Rhombus API key. Must be accompanied by the `x-auth-scheme` header set to `api-token` (or `partner-api-token` for partner endpoints).
- `Authorization` (header): instead of an API key, an OAuth access token (`Bearer <token>`) with the `write` scope.
- `x-auth-scheme` (header, string, default: `partner-api-token`): Authentication scheme identifier. Use `api-token` or `partner-api-token` with the `x-auth-apikey` header, `api` or `partner-api` with `x-auth-apikey` plus a client certificate, `api-oauth-token` or `partner-api-oauth-token` with `x-auth-access-token`, and `federated-token` with `x-auth-ft`. A request with `Authorization: Bearer <token>` and no `x-auth-scheme` is treated as OAuth, and `federated-token` may also be sent as the `x-auth-scheme` and `x-auth-ft` query parameters. One of: `api-token`, `api`, `api-oauth-token`, `federated-token`, `partner-api-token`, `partner-api`, `partner-api-oauth-token`.
- `x-auth-org` (header, string<RUUID>): Client organization UUID (22-character RUUID), for partner credentials only. With it the call runs in that client organization with the partner support authority's role. Without it a partner credential runs as the partner organization, which outside the partner endpoints is deprecated (responses carry `Deprecation` and `Sunset: Tue, 05 Jan 2027 00:00:00 GMT`). A malformed value returns 400 `INVALID_AUTH_ORG`; a client organization the partner cannot access returns 403 `PARTNER_CLIENT_ACCESS_DENIED`.

## Request body

Content type: `application/json`. Pre-register controlled, unregistered hardware to a managed client.

- `locationUuid` (string<RUUID> | null): base 64 (url-safe) uuid string
- `serials` (array<string | null> | null, required): Serial numbers of controlled, unregistered hardware units (1 to 50). Trimmed and de-duplicated.
- `toClientOrgUuid` (string<RUUID> | null, required): base 64 (url-safe) uuid string

## Response 200

OK. Content type: `application/json`

- `assigned` (array<string | null> | null): Serials now pending registration to the client (including units that were already pending to it).
- `error` (boolean | null)
- `errorCode` (string | null): Stable, machine-readable code for the failure (one of the ApiErrorCode catalog) when error is true. Branch on this, not on errorMsg.
- `errorMsg` (string | null)
- `failed` (array<object> | null): Serials that could not be assigned, each with a code and message.
- `warningMsg` (string | null)

## Errors

Also 400, 401, 403, 429, 500, 503 with the standard error body (`errorCode`, `errorMsg`): https://developer.rhombus.com/errors

## OpenAPI

````yaml
openapi: 3.0.1
info:
  title: Rhombus API
  version: "1.0"
servers:
  - description: Production Server
    url: https://api2.rhombussystems.com
security:
  - ApiKeyAuth: []
paths:
  /api/partner/hardware/assignToClient:
    post:
      description: "MSP only. Pre-registers hardware under the MSP's PARTNER control that is not registered anywhere (shelf stock, or units unregistered from a previous client) to a managed client org, so each unit lands in that client when it comes online. A registered unit is refused (HARDWARE_NOT_AVAILABLE; move it with /hardware/moveToClient); a unit already pending to another client is refused (CONFLICT); one already pending to this client is reported as assigned without a second pending registration. Per-serial results; one failing serial never aborts the others. Errors: 400 VALIDATION_FAILED (missing toClientOrgUuid, 0 or more than 50 serials); 403 NOT_VERIFIED_MSP, NOT_MANAGED_CLIENT; LOCATION_NOT_FOUND when locationUuid is not in the client org."
      operationId: assignHardwareToClient
      parameters:
        - description: "Authentication scheme identifier. Use `api-token` or `partner-api-token` with the `x-auth-apikey` header, `api` or `partner-api` with `x-auth-apikey` plus a client certificate, `api-oauth-token` or `partner-api-oauth-token` with `x-auth-access-token`, and `federated-token` with `x-auth-ft`. A request with `Authorization: Bearer <token>` and no `x-auth-scheme` is treated as OAuth, and `federated-token` may also be sent as the `x-auth-scheme` and `x-auth-ft` query parameters."
          example: partner-api-token
          in: header
          name: x-auth-scheme
          required: false
          schema:
            default: partner-api-token
            enum:
              - api-token
              - api
              - api-oauth-token
              - federated-token
              - partner-api-token
              - partner-api
              - partner-api-oauth-token
            type: string
        - description: "Client organization UUID (22-character RUUID), for partner credentials only. With it the call runs in that client organization with the partner support authority's role. Without it a partner credential runs as the partner organization, which outside the partner endpoints is deprecated (responses carry `Deprecation` and `Sunset: Tue, 05 Jan 2027 00:00:00 GMT`). A malformed value returns 400 `INVALID_AUTH_ORG`; a client organization the partner cannot access returns 403 `PARTNER_CLIENT_ACCESS_DENIED`."
          in: header
          name: x-auth-org
          required: false
          schema:
            format: RUUID
            maxLength: 22
            minLength: 22
            type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: "#/components/schemas/Partner_msp_AssignHardwareToClientWSRequest"
      responses:
        "200":
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Partner_msp_AssignHardwareToClientWSResponse"
          description: OK
        "400":
          $ref: "#/components/responses/BadRequest"
        "401":
          $ref: "#/components/responses/Unauthorized"
        "403":
          $ref: "#/components/responses/Forbidden"
        "429":
          $ref: "#/components/responses/TooManyRequests"
        "500":
          $ref: "#/components/responses/InternalServerError"
        "503":
          $ref: "#/components/responses/ServiceUnavailable"
      security:
        - ApiKeyAuth: []
        - oauth2:
            - write
      summary: Assign controlled, unregistered hardware to a managed client
      tags:
        - Partner Webservice
components:
  schemas:
    Partner_msp_AssignHardwareToClientWSRequest:
      description: Pre-register controlled, unregistered hardware to a managed client.
      properties:
        locationUuid:
          description: base 64 (url-safe) uuid string
          example: AAAAAAAAAAAAAAAAAAAAAA
          format: RUUID
          nullable: true
          type: string
        serials:
          description: Serial numbers of controlled, unregistered hardware units (1 to 50). Trimmed and de-duplicated.
          items:
            description: Serial numbers of controlled, unregistered hardware units (1 to 50). Trimmed and de-duplicated.
            nullable: true
            type: string
          nullable: true
          type: array
        toClientOrgUuid:
          description: base 64 (url-safe) uuid string
          example: AAAAAAAAAAAAAAAAAAAAAA
          format: RUUID
          nullable: true
          type: string
      required:
        - serials
        - toClientOrgUuid
      type: object
    Partner_msp_AssignHardwareToClientWSResponse:
      description: Per-serial outcome of a hardware assignment.
      properties:
        assigned:
          description: Serials now pending registration to the client (including units that were already pending to it).
          items:
            description: Serials now pending registration to the client (including units that were already pending to it).
            nullable: true
            type: string
          nullable: true
          type: array
        error:
          nullable: true
          type: boolean
        errorCode:
          description: Stable, machine-readable code for the failure (one of the ApiErrorCode catalog) when error is true. Branch on this, not on errorMsg.
          nullable: true
          type: string
        errorMsg:
          nullable: true
          type: string
        failed:
          description: Serials that could not be assigned, each with a code and message.
          items:
            $ref: "#/components/schemas/Partner_msp_HardwareAssignFailureWSType"
          nullable: true
          type: array
        warningMsg:
          nullable: true
          type: string
      type: object
    Partner_msp_HardwareAssignFailureWSType:
      description: A hardware unit that could not be assigned to the client and why.
      properties:
        code:
          description: Stable, machine-readable reason (one of the ApiErrorCode catalog, e.g. HARDWARE_NOT_AVAILABLE, CONFLICT). Branch on this, not on message.
          nullable: true
          type: string
        message:
          description: Client-facing explanation of the failure.
          nullable: true
          type: string
        serial:
          nullable: true
          type: string
      type: object
  securitySchemes:
    ApiKeyAuth:
      description: Your Rhombus API key. Must be accompanied by the `x-auth-scheme` header set to `api-token` (or `partner-api-token` for partner endpoints).
      in: header
      name: x-auth-apikey
      type: apiKey
    oauth2:
      description: 'OAuth 2.0 authorization code flow with PKCE (`S256`). Send the access token as `Authorization: Bearer <token>`. Each operation lists the scopes it requires; a token without them is refused 403 with `WWW-Authenticate: Bearer error="insufficient_scope"`.'
      flows:
        authorizationCode:
          authorizationUrl: https://console.rhombus.com/oauth/authorize
          refreshUrl: https://auth-web.rhombussystems.com/oauth/token
          scopes:
            physical: Unlock doors and elevators, lockdown, alarms, speakers and robots
            read: View cameras, footage and settings
            write: Change settings and data
          tokenUrl: https://auth-web.rhombussystems.com/oauth/token
      type: oauth2
````
