Error Event Flow

Partners process various delivery operations asynchronously; therefore, we need to define an interaction to let partners submit any errors they found while processing delivery operations. We use the gRPC Status Codes to describe error events.

1. Partner processes various delivery operation requests. If they find any errors while processing, they send POST requests to v1/delivery/callback/error with description of error and error code. The error message provided in this endpoint will be displayed to the user, so ideally it should be friendly.