Error storing information about number of URs heuristically-completed units of recovery (rc = reason code )
During the start of a Gateway with XA enabled, the initialization of the resource manager processes heuristically-completed transactions. These transactions may come from this Gateway or any Gateway in the same HA Group. For more information see the "Highly available Gateway group" and "Cold Start" sections of the CICS® Transaction Gateway Information Center. The maximum number of units of recovery that can be processed is controlled by the environment variable 'CTG_XA_MAX_TRAN'. The default value is 1000. The first unit of recovery after this limit will cause initialization to stop.
The CICS Transaction Gateway fails to start.
As there are at least number of URs URs to process, the value needs to be increased. Use the RRS administrative panels in ISPF to find the number of URs in in-forget state for this Gateway and any others with the same APPLID qualifier.