An internal logic error occurred during a subsystem storage operation on a Storage Control device with a cache.
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The system ends I/O processing for this request. If the error occurred in a Storage Control device with a cache subsystem storage is taken offline, and future I/O requests are processed directly with the DASD.
The system issues this message because of a microcode error. Follow installation procedures to take corrective action.
If the error occurred on the Model 11 or 21, reconfigure the system to move the paging data to another subsystem. Otherwise, no action is required.
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