DFS4491W AN INVALID DBD NAME WAS FOUND IN MEMBER member-name
Explanation
Within the DBD or PSB identified in the error message, the IMS Catalog Populate utility (DFS3PU00) found a referenced DBD name that did not follow the naming requirements for a DBD. This error is probably an IMS software error.
System action
No catalog record was built for member. The DFS3PU00 utility continues inserting other records in the catalog and ends with return code 4.
Programmer response
Rerun the DFS3PU00 utility with a DD statement that has ddname IMS and that refers to your IMS.DBDLIB or IMS.PSBLIB containing the invalid DBD name. If the problem persists, contact IBM® Software Support.