All Oracle Error CodesOracle DBA Forum

NNC-00426:

no such data type
Cause: A caller attempted to create a data item, and could not because the data item's type does not exist.
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 operation with an existent data type. Otherwise, turn on tracing and re-execute the failing operation. If the error persists, contact Worldwide Customer Support.