This article details two helpful commands that may be utilized when troubleshooting / locating ACR dataset(s) and members located within the z/OS mainframe.

ISPLIBD

Once ACR panels have been loaded, typing ISPLIBD from the "command line" will populate which ACR dataset(s) are being utilized  :

This command is helpful when troubleshooting a new installation, verifying that the new dataset(s) are being found / loaded correctly.

TSO ISRDDN

Once ACR panels have been loaded, typing TSO ISRDDN from the "command line" will populate all dataset allocation(s) :

This command is helpful when attempting to locate certain members within your libraries. For example, utilizing the "M" command followed by a member, such as your control file ( UNICNTL ), the command will search all datasets and return any where the member is found :