--- title: CarrierServiceCreateUserError - GraphQL Admin description: An error that occurs during the execution of `CarrierServiceCreate`. api_version: 2025-10 api_name: admin type: object api_type: graphql source_url: html: https://shopify.dev/docs/api/admin-graphql/latest/objects/carrierservicecreateusererror md: https://shopify.dev/docs/api/admin-graphql/latest/objects/carrierservicecreateusererror.md --- # Carrier​Service​Create​User​Error object An error that occurs during the execution of `CarrierServiceCreate`. ## Fields * code [Carrier​Service​Create​User​Error​Code](https://shopify.dev/docs/api/admin-graphql/latest/enums/CarrierServiceCreateUserErrorCode) The error code. * field [\[String!\]](https://shopify.dev/docs/api/admin-graphql/latest/scalars/String) The path to the input field that caused the error. * message [String!](https://shopify.dev/docs/api/admin-graphql/latest/scalars/String) non-null The error message. *** ## Map No referencing types *** ## Mutations * [carrier​Service​Create](https://shopify.dev/docs/api/admin-graphql/latest/mutations/carrierServiceCreate) mutation Creates a carrier service that provides real-time shipping rates to Shopify. Carrier services provide real-time shipping rates from external providers like FedEx, UPS, or custom shipping solutions. The carrier service connects to your external shipping rate calculation system through a callback URL. When customers reach checkout, Shopify sends order details to your callback URL and displays the returned shipping rates. The service must be active to provide rates during checkout. *** ## <\~> CarrierServiceCreateUserError Mutations ### Mutated by * <\~>[carrier​Service​Create](https://shopify.dev/docs/api/admin-graphql/latest/mutations/carrierServiceCreate) *** ## Interfaces * [Displayable​Error](https://shopify.dev/docs/api/admin-graphql/latest/interfaces/DisplayableError) interface *** ## ||-CarrierServiceCreateUserError Implements ### Implements * ||-[Displayable​Error](https://shopify.dev/docs/api/admin-graphql/latest/interfaces/DisplayableError)