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Return Codes and System Variables

Following each verb the &RETCODE and &ZFDBK system variables are set to indicate the success or otherwise of the &APPC request.

In addition, for each conversation, a set of system variables is maintained that provides information concerning the conversation status:

&ZAPPCELM

Message from an error log GDS variable

&ZAPPCELP

Product set information from an error log GDS

&ZAPPCID

Conversation identifier

&ZAPPCIDA

The conversation identifier for the transaction that started the NCL process

&ZAPPCLNK

Local link name

&ZAPPCMOD

Session mode name

&ZAPPCQLN

Network qualified local luname

&ZAPPCQRN

Network qualified remote luname

&ZAPPCRM

Current receive map name

&ZAPPCRPI

Received protocol indicators

&ZAPPCSM

Current send map name

&ZAPPCSTA

Conversation state

&ZAPPCSYN

Conversation sync_level

&ZAPPCTYP

Conversation type

&ZAPPCWR

What_received indicator

&ZAPPCWRI

What_received short indicator

&ZAPPCRTS

Request_to_send indicator

&ZAPPCTRN

Transaction identifier