ATB054I

Explanation
 The operator entered a SET APPC=xx command to
specify an APPCPMxx parmlib member that deletes a logical unit (LU)
from the Advanced Program-to-Program Communication (APPC) configuration,
but the system could not delete it because the LU does not exist.
 In
the message text:  luname
The non-existent LU.

System action
 The system continues processing.

Operator response
 Enter the DISPLAY APPC command to verify
the current APPC configuration.

Module
 ATBLUDE

Source
 APPC/MVS

Routing Code
 2

Descriptor Code
 4