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IECTMS1O

dddd, ,ENTER VSN

Reason:

An NL or BLP tape request is being opened for input or output. In the case of IECTMS1O, the request is being made by the CA 1 label editor routine at OPEN; IECTMS1E is issued at EOV.

Action:

The operator must reply with the correct volume serial number (twice in succession if the volume was not specifically requested in the JCL). A response of PRIVAT or SCRTCH is not allowed.