You can use RACF® to control the use of bypass label processing (BLP). If an installation specifies BLP at system generation or JES initialization, and the user specifies BLP on the LABEL parameter of the DD statement or on the dynamic allocation text unit, RACF issues a RACROUTE REQUEST=AUTH to the FACILITY class, resource ICHBLP, to determine if the user's BLP request can be honored. To activate this additional RACF protection, installations must do the following:

• Define the profile ICHBLP to RACF using the RDEFINE command
• Activate the TAPEVOL class (it is not necessary to define tape volumes to the TAPEVOL class).