When the requested use attribute is the same as the existing use attribute (for example, the change from PRIVATE to PRIVATE or from SCRATCH to SCRATCH ), the tape volume record is updated with values specified on the CBRXLCS macro invocation, the installation exit, or both; however, a warning return code is returned. In both cases, if the volume resides in a tape library, a call is made to the library to change the category of the volume in the library manager inventory.