RECFM={
F|FB|FBA|FU|V|VB|VBA|VU}

F
.
Fixed-length records.
FB.
Blocked fixed-length records.
FBA.
Blocked fixed-length records with ANSI control characters.
FU.
Undefined length records.
V.
Variable-length records.
VB.
Blocked variable-length records.
VBA.
Blocked variable-length records with ANSI control characters.
VU.
Undefined length records.

If you specify either FU and VU for the RECFM value, PowerExchange uses RECFM=U in the dynamic allocation request.
If you omit both the LRECL and RECFM statements, PowerExchange uses 32752 for the LRECL value and VB for the RECFM value when allocating data sets.