ATTRPRN

The CICS® transaction can place the identification of the originating terminal in the ATTRPRN field.

This identification is wrapped into the PRN field by IMS if a session restart is required or a reply is required to a message sent to IMS by CICS with SEND LAST. The CICS transaction places this value in the field by using the RRESOURCE field of the BUILD ATTACH and examines this field by using the EXTRACT ATTACH command.

For asynchronous unsolicited output, IMS uses the source LTERM name as the default, if a reply is necessary. MFS can be used to set or override this value on any type of output. When a CICS application receives this value, the value should be saved and returned as the PRN field for subsequent replies.