Safeguarding data integrity

If it is important to safeguard data integrity across connected transactions, then the CICS® synchronization commands are available.

Table 1. Synchronization commands for APPC basic applications
Conversation sync level	Commands
0	None
1	GDS SEND CONFIRM GDS ISSUE CONFIRMATION
2	GDS SEND CONFIRM GDS ISSUE CONFIRMATION SYNCPOINT GDS ISSUE PREPARE SYNCPOINT ROLLBACK SRRCMIT SRRBACK

The SRRCMIT and SRRBACK commands are defined in the following sections. SAA verbs for SYNCPOINT and SYNCPOINT ROLLBACK respectively.