An operator START command was issued to start the Cryptographic Unit Support but a cryptographic function is already in progress. The cryptographic function could be the Cryptographic Unit Support, the key generator for the Cryptographic Unit Support, the Programmed Cryptographic Facility, or the key generator for the Programmed Cryptographic Facility.
The START command is ignored.
If a START command was issued when the Cryptographic Unit Support is already active or the START command procedure is already running, an operator STOP command must be issued before another START command can be accepted. If the key generator utility program is currently running, reissue the START command when the utility program ends.
Cryptographic Unit Support Program (CUSP)
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