gRPC
6 ALREADY_EXISTS
The entity that a client attempted to create already exists. For example, a file or directory that the RPC was supposed to create already exists.
When You See This Code
A create operation failed because a resource with the same unique identifier or name already exists in the system.
How to Fix
Use a different identifier, or switch to an upsert/update operation if overwriting is acceptable. Check for existing resources before creating.