--- title: PaymentSessionConfirmUserErrorCode - Payments Apps API description: Possible error codes that can be returned by `PaymentSessionConfirmUserError`. api_version: 2025-01 api_name: payments-apps type: enum api_type: graphql source_url: html: https://shopify.dev/docs/api/payments-apps/2025-01/enums/PaymentSessionConfirmUserErrorCode md: https://shopify.dev/docs/api/payments-apps/2025-01/enums/PaymentSessionConfirmUserErrorCode.md --- # Payment​Session​Confirm​User​Error​Code enum Possible error codes that can be returned by `PaymentSessionConfirmUserError`. ## Valid values * CONFIRMATION\_​NOT\_​SUPPORTED Confirmation flow requirements are not configured completely for this payment app. * INVALID\_​STATE\_​TRANSITION The state transition is invalid. * PAYMENT\_​SESSION\_​NOT\_​FOUND Payment session not found. *** ## Fields * [Payment​Session​Confirm​User​Error.​code](https://shopify.dev/docs/api/payments-apps/2025-01/objects/PaymentSessionConfirmUserError#field-code) OBJECT An error that occurs during the execution of `PaymentSessionConfirm`. *** ## Map ### Fields with this enum * <-|[Payment​Session​Confirm​User​Error.code](https://shopify.dev/docs/api/payments-apps/2025-01/objects/PaymentSessionConfirmUserError#field-code)