gRPC 0 OK vs 12 UNIMPLEMENTED
Both gRPC 0 (OK) and 12 (UNIMPLEMENTED) belong to the gRPC Status Codes category. 0 indicates that the operation completed successfully. Not an error; returned on success. Meanwhile, 12 means that the operation is not implemented or is not supported/enabled in this service.
Description
The operation completed successfully. Not an error; returned on success.
When You See It
The RPC completed without any issues. This is the expected response for every successful gRPC call.
How to Fix
No fix needed — this indicates everything worked correctly.
Description
The operation is not implemented or is not supported/enabled in this service.
When You See It
The client called an RPC method that the server does not implement. This often happens when the client uses a newer proto definition than the server supports.
How to Fix
Verify the server version supports the method you're calling. Update the server to implement the missing method, or use an alternative endpoint.
Key Differences
gRPC 0: The operation completed successfully. Not an error; returned on success.
gRPC 12: The operation is not implemented or is not supported/enabled in this service.
You encounter 0 when the RPC completed without any issues. This is the expected response for every successful gRPC call.
You encounter 12 when the client called an RPC method that the server does not implement. This often happens when the client uses a newer proto definition than the server supports.
When to Use Which
For 0 (OK): No fix needed — this indicates everything worked correctly. For 12 (UNIMPLEMENTED): Verify the server version supports the method you're calling. Update the server to implement the missing method, or use an alternative endpoint.