IBM SC34-6814-04 - Manual (Page 58)

UEPBMTCT
Address of the TCTTE associated with the mapping request.
UEPEXECB
Address of the system EIB associated with the task.
UEPBMCNT
Address of the halfword binary number of “field elements” in the
field element table.
UEPBMTAB
Address of the field element table.
Return codes
UERCNORM
Continue processing.
UERCPURG
Task purged during XPI call.
XPI calls
All can be used.
The field element table structure
The field element table contains one or more elements which provide information
about each “field of interest” passed to the exit. A “field of interest” is a field which
has been defined as VALIDN=USEREXIT in the map source file used to create the
mapset referenced in the mapping operation.
Each field element has the following structure:
BMXMAPST
is an 8-byte area which contains the name of the mapset associated with this
field. If terminal or alternate suffixes are used with mapset names in your CICS
installation, the mapset name may have a suffix appended to the name
specified in the mapping request.
BMXMAP
is a 7-byte area which contains the name of the map associated with this field.
BMXFDFB
is a one-byte field copied from the field specification in the map load module. It
contains indicators as follows:
X'80' CASE=MIXED
X'40' Group field entry
X'20' Group field descriptor
X'10' ATTRB=DET
X'08' JUSTIFY=ZERO
X'04' JUSTIFY=RIGHT
X'02' INITIAL,XINIT, or GINIT specified
X'01' Named field (DSECT entry exists)
BMXMAPLN
is a halfword binary value which contains the field length defined in the
LENGTH option of the DFHMDF macro.
36 Customization Guide