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M204.0121  I​/​O error detected on CHKPOINT stream

This message is issued when Model 204 detects a permanent I/O error on the CHKPOINT data set or, if CHKPOINT is defined as a CONCATENATED, PARALLEL, or RING stream, on one of the stream's members. When CHKPOINT is a single data set, it is most likely full. When it is defined as a stream, other messages will appear which describe the error in more detail.

System manager response: Check the JES log if running under z/OS or the console log if running under z/VM to determine the cause of the error. Correct the problem.

Operator response: Notify the system manager of this problem.

Message attributes:

RETCODEO=104Sets online return code
RETCODEB=104Sets batch (single user) return code
CLASS=EError class; the message can be suppressed with the X'04' bit setting of the MSGCTL parameter
AUDITMSWrites the message with line type MS to the audit trail
NOCOUNTDoes not increment the error count (ERCNT) parameter
NOTERMDoes not display the message on the user's terminal
OPRWrites the message to the (operator) console

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