REJECT command operands

ANYUSE(prefix): Specifies the shelf locations of volumes not available for read or write processing. prefix is a generic shelf location that consists of one-to-five alphanumeric, national, or special characters that are followed by an asterisk (*). Specify a single asterisk if, at OPEN time, you want to reject all volumes not defined to DFSMSrmm. For example, ANYUSE(*) prevents the use of foreign tapes, unless you use the DFSMSrmm installation exit EDGUX100 to request that DFSMSrmm ignore such tapes. You can also use the REJECT ANYUSE command to partition system-managed tape libraries. See Partitioning system-managed tape libraries for more information.
Default: None.
OUTPUT(prefix): Specifies the shelf locations of volumes not available for write processing. prefix is a generic shelf location that consists of one-to-five alphanumeric, national, or special characters that are followed by an asterisk (*). Specify a single asterisk if, at OPEN time, you want to prohibit writing to all volumes that are not defined to DFSMSrmm.
Default: None.