Check for any IXG277E and IXG251I hard-copy messages and see the system programmer response for the message identifier that is included in message IXG251I. See z/OS DFSMS Access Method Services Commands for the IDCAMS return code information, and correct the condition that caused the error.

After correcting the error condition, submit the necessary IDCAMS ALTER entryname NEWNAME() job to get the existing log stream staging data set name updated to match the new stream name change. This will need to be done before defining a new instance of a log stream that uses the same name as the log stream identified in this message. Failure to get the staging data set renamed correctly can result in a "loss of data" condition when a connection occurs for the log stream that was renamed.

If you cannot identify the problem source or correct the error, search problem reporting data bases for a fix for the problem. If no fix exists, contact the IBM® Support Center.