All Oracle Error CodesOracle DBA Forum

NNC-00428:

invalid meta-data data item
Cause: A caller provided the name server program interface with an invalid meta-data data item.
Action: Not normally visible to the user, except when using the name server control program. If the error occurs when using the control program, retry the failing operation with a valid meta-data argument. Otherwise, turn on tracing and re-execute the failing operation. If the error persists, contact Worldwide Customer Support.