ICU045I CRYPTOGRAPHIC UNIT SUPPORT OR KEY GENERATOR OR PROGRAMMED CRYPTOGRAPHIC FACILITY ALREADY IN PROGRESS

Explanation
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.

System action
The START command is ignored.

Operator response
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.

Source
Cryptographic Unit Support Program (CUSP)

Routing code
11,*

Descriptor code
4