double check with whoever normally applying DDL in your company. I could not find any references at all to the table you mentioned here. All the schema changes from Pega should be captured in table pr_changelog table, can you find anything there?
It turns out this is created by the DefragSysLocksDaemon Jim Kelly has an SR for this. The db procedure that does the work is sppr_defragment_table. The Daemon is activated by default with only pr_sys_locks table is passed into the procedure. The DSS syslocks/defragEnabled is true by default but can be disabled if desired.