When returning error responses with some details, it would be better to have a standard error response format.

gRPC has a simple error response object with a customizable error field of Any type:
Related:

• https://grpc.io/docs/guides/error/
• https://github.com/googleapis/googleapis/blob/master/google/rpc/code.proto