Options that you must code exactly as given

In some cases, DB2® requires particular values of APPL options.

For the following options, you must code the values exactly as shown; they are not the VTAM® defaults:

APPC=YES
Tells VTAM that DB2 uses APPC conversation verbs.
AUTH=(ACQ)
Determines the DB2 system authority to use certain VTAM functions.
SRBEXIT=YES
Tells VTAM that DB2 uses service request block (SRB) processing in its exit routines.
SYNCLVL=SYNCPT
Tells VTAM that DB2 supports two-phase commit. Other systems communicating with this DB2 use this indication to determine if DB2 supports the updating of many locations in one unit of work.

Coding SYNCLVL=SYNCPT does not preclude the support of partner LUs that do not support two-phase commit. DB2 still supports the non-two-phase process.