It is not possible
for the exit to prevent the request from being canceled.
Exit-specific parameters
UEPALTSD
Address of a 4-byte field containing the symbolic identifier of the
transaction which was to be started by this request.
UEPALTRM
Address of a 4-byte field containing the identifier of the terminal
or connection to which this request was directed.
UEPALDAT
Address of an area of storage containing the data specified in the FROM
option; or hexadecimal zeros, in either of the following cases:
The AID was created by a START request without a FROM option.
The AID is associated with a channel (in which case the field pointed
to by UEPALCHN will be set to a name other than blanks).
UEPALLEN
Address of a fullword binary field containing the length of the FROM
data; or hexadecimal zeros, in either of the following cases:
The AID was created by a START request without a FROM option.
The AID is associated with a channel (in which case the field pointed
to by UEPALCHN will be set to a name other than blanks).
UEPALRQD
Address of an 8-byte field containing the value of the REQID associated
with the FROM data. The data was stored in a temporary storage queue with
this name. This value was either specified explicitly using the REQID option
on the START command, or created internally by CICS®.
UEPALQUE
Address of an 8-byte field containing the value specified in the QUEUE
option on the START command; or hexadecimal zeros if QUEUE was not specified.
UEPALRTE
Address of a 4-byte field containing the value specified in the RTERMID
option on the START command, or hexadecimal zeros if RTERMID was not specified.
UEPALRTA
Address of a 4-byte field containing the value specified in the RTRANSID
option on the START command, or hexadecimal zeros if RTRANSID was not specified.
UEPALFMH
Address of a 1-byte field containing the value X'FF' if the
data contains FMHs, as specified by the FMH option on the associated START
command; or hexadecimal zeros otherwise.
UEPALSTC
Address of a 2-byte field containing the start code. This is "SZ" for FEPI starts; otherwise it is "SD".
UEPALCHN
Address of a 16-byte field containing the name of the channel associated
with the AID. If there is no channel associated with the AID, this field is
set to blanks.
Return codes
UERCNORM
No other return codes are supplied. The value of the return code is
not inspected.