The message is a response to the F ANTMAIN,PETINFO command, and indicates that a problem exists with the SDM pause element token table.
Failures are observed when you run DFSMSdss with Concurrent Copy, Fast Replication or extended-format data sets, as well as in applications that use the ANTRQST application programming interface.
Issue a F ANTMAIN,DUMP command to capture a diagnostic dump. Cancel the ANTMAIN address space. It should automatically restart and reallocate the table. Search problem reporting databases for a fix for the problem. If no fix exists, report the problem to the IBM® Support Center.
DFSMS System Data Mover.