Never mind, it resolved. I just deleted service name manually from cdb_service$ table that fixed the issue.
ORA-65149: PDB name conflicts with existing service name in the CDB or the PDB
Did you also check for the service name in all PDBs?
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I just deleted service name manually from cdb_service$ table that fixed the issue.
I'm not sure that I would manually delete from a Data Dictionary table. That could cause more problems than you are trying to fix. While your issue has been resolved, the next time I would file a Service Request with Oracle Support. It is likely you are hitting a bug and they would need to know to fix it so that you and others do not have this issue in the future.