ATTACH function management header

This topic describes the ATTACH function management header fields. The primary fields that CICS® uses are ATTDPN, ATTPRN, ATTRDPN, and ATTRPRN.

ATTDPN
The CICS transaction specifies the outbound destination process name field (ATTDPN) in the PROCESS field of the BUILD ATTACH command.
ATTPRN
The CICS transaction specifies the primary resource name field (ATTPRN) in the RESOURCE field of the BUILD ATTACH command.
ATTRDPN
The CICS transaction specifies the return destination process name (ATTRDPN) in the RPROCESS field of the BUILD ATTACH command.
ATTRPRN
The CICS transaction can place the identification of the originating terminal in the ATTRPRN field.
ATTDQN and ATTDP
When sent to CICS from IMS, on the ATTACH for a demand-paged output message, ATTDQN contains a unique message identifier.
ATTIU
The CICS transaction specifies the interchange unit code (ATTIU) in the IUTYPE field of the BUILD ATTACH command.
ATTDSP
The CICS transaction specifies the data stream profile (ATTDSP) in the DATASTR field of the BUILD ATTACH command to determine the IMS component.
ATTDBA
The CICS transaction specifies the deblocking algorithm (ATTDBA) in the RECFM field of the BUILD ATTACH command.
ATTACC
The ATTACC parameter is not supported on an ISC session and causes session termination if sent.

Parent topic: Coding function management headers for CICS