DFS4463E FAILURE OPENING THE ACBLIB WITH DDNAME IMSACBxx TO READ THE DIRECTORY. OPEN RC = rc.

Explanation
 In opening the ACBLIB referred to by the DD statement
with the ddname IMSACBxx to identify ACBLIB members from the directory,
the Catalog Populate utility encountered return code rc from an OPEN
macro instruction

System action
 The utility ended with return code 12. The catalog
was not updated.

Programmer response
Ensure that the DD statement with the ddname
IMSACBxx refers to an ACBLIB.

Module
DFS3PU00