How can you determine which CA PDSMAN $ACCESS and $UPDATE rules match a particular library?
CA PDSMAN provides a utility program named PDSM34. This utility will provide a report that provides the rules in play for a specific dataset name. Whatever the matching $ACCESS and $UPDATE rules are for a library name you specify will be reported on. The CA PDSMAN utility will process the rules in order. The utility can be executed as a batch program or online by selecting option 4 on the PDSMAN ISPF Master Menu.
Sample Batch process
//PDSM34 EXEC PGM=PDSM34,PARM='DSNAME.HERE'
//STEPLIB DD DISP=SHR,DSN=your PDSM.PDSMLINK
//PDSMRPT DD SYSOUT=*
//SYSIN DD *
Please review the CA PDSMAN Library Management Administrator Guide