FulfillmentServiceDelete and FulfillmentServiceUpdate not working

[jake-frate]

I am having issues when using the mutations "fulfillmentServiceUpdate" and "fulfillmentServiceDelete".

I know that I have a valid FulfillmentService ID because I can get it with the query "fulfillmentService" :

query FulfillmentService($id: "gid://shopify/FulfillmentService/62330929469") { 
    fulfillmentService(id:$id) {
        id
        serviceName
    }
} 

{
    "data":  { 
        "fulfillmentService": { 
            "id": "gid://shopify/FulfillmentService/62330929469?id=true", 
            "serviceName": "Frate" 
        }
    }
} 

But, when I use that same ID for the mutations "fulfillmentServiceUpdate" and "fulfillmentServiceDelete", I get the error "Fulfillment service could not be found.":

mutation FulfillmentServiceUpdate( 
  $id: "gid://shopify/FulfillmentService/62330929469?id=true"
  $name: "Test Name" 
) { 
  fulfillmentServiceUpdate(
    id: $id,
    name: $name
  ) { 
    fulfillmentService {
      id 
    }
    userErrors {
      field 
      message
    }
  }
}

{
  "data": {
    "fulfillmentServiceUpdate": {
      "fulfillmentService": null,
      "userErrors": [{ 
        "field": [ "id" ],
        "message": "Fulfillment service could not be found."
      }]
    }
  }
}

Does anybody have any guesses/ideas as to why I get this error?

Note: I am sure that my app has both read and write fulfillments access scope enabled, so it's not an issue of lacking an access scope.

[RobZone]

Hi @jake-frate 

Are you using an api_client_id token from fulfillment service 62330929469?  You can only update or delete the fulfillment service owned by the api client token.