Writing/reading from/to NetApp NFS volume with the same users, but different uid/gid

Hello, we have a netapp nfs volume mounted on 2 machines. Both machine use the same user/grouo to write/read from this volume, but when this users are/where created they didn't get the same uid and gid. Now, if one of the server write to the NFS volume, the other server wont be able to read/write for the exact file.

Any idea how to fix it? Also, we don't really have access to the netapp nfs volume, we only get it to use it.