When USE_PAM_CREDS is enabled in lsb.queues or lsb.applications, the limits specified in the PAM configuration file are applied to an application or queue when its job is dispatched to a Linux host using PAM. The job will fail if the execution host does not have PAM configured.
On hosts that have a PAM configuration file with resource limits specified and when USE_PAM_CREDS=y in lsb.queues or lsb.applications, applies resource limits on jobs running on the execution host.
For more information about configuring a PAM file, check Linux documentation.