If the use attribute is SCRATCH when returning from the exit and the library supports outboard policy management, the construct names at the library are set to the default policy names, which contain blanks.

If the use attribute is PRIVATE when returning from the exit and the library does not support outboard policy management, the storage group policy name set by the cartridge entry installation exit (CBRUXENT) is stored in the TCDB, but the policy names for storage class, management class and data class in the new policy fields are ignored.

For a private volume, if the library supports outboard policy management, the cartridge entry installation exit (CBRUXENT) can assign or change policy names in the new fields. To change the storage group, use UXEGROUP, as UXELMSG is an input-only field.

To change the policy names or assign new names for storage class, management class, or data class policies, the exit can update the respective fields: UXELMSC, UXELMMC, UXELMDC. Upon return, these fields are checked for valid syntax (starts with an alphabetic or a national character [$*@#%], contains no embedded blanks, contains alphanumeric and national characters only); otherwise, the fields must contain all blanks in order to set the default policy names. These constructs are not validated to ensure that they are valid SMS constructs in the current SCDS as is done for the storage group. If the construct names are syntactically correct, the library is updated with these policy names. This approach provides greater flexibility, especially on import.