> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cargado.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Manage carrier relationships

You can sync carrier relationships and statuses from your TMS to Cargado. This has several benefits including:

* Preventing do not dispatch carriers from seeing your freight
* Carriers who are not onboarded will be offered an onboarding link upon match.
* Carriers who are active can be immediately assigned to freight.

## How it works

You can upsert a carrier relationship by providing the carrier identifiers, their relationship status, and their onboarding status.

<CodeGroup>
  ```http Request theme={null}
  POST /carrier-relationships/upsert
  Api-Key: <API Key>
  Content-Type: application/json

  {
    "carrierRelationships": [
      {
        "carrier": {
          "dotNumber": "1234567",
          "mcNumber": "2342342"
        },
        "status": "ACTIVE",
        "onboardingStatus": "ONBOARDED"
      },
      {
        "carrier": {
          "rfcNumber": "012345678912"
        },
        "status": "DO_NOT_DISPATCH",
        "onboardingStatus": "ONBOARDED"
      }
    ]
  }
  ```
</CodeGroup>