Logical I⁄O error on log dddd at block number n has occurred.
CICS® VR has detected a logical error while reading the log dddd at block number n. The block number will represent either the number of blocks from the beginning of the file (if running forward recovery), or the number of blocks from the end of the file (if running backout).
This message is followed by a CICS VR dump and abend code 3030, 3031, 3032, or 3033.