MSIR.0801 READ SCREEN encountered in NOSCREEN mode

A Janus Web Server port was defined with the NOSCREEN parameter, presumably to prevent accidental entry to Janus Web Legacy mode, but the application running on the port issued a READ SCREEN.

Either the NOSCREEN setting is working as expected and has caught an accidental READ SCREEN, or there is a real need to use Janus Web Legacy Support on the port. In the former case, correct the application to prevent a READ SCREEN from a web request — the $Web function makes it easy to detect when code is running on a web thread. In the latter case, remove the NOSCREEN parameter from the port definition, or add a SCREEN parameter to the JANUS WEB ON rule for the URLs that need to use Janus Web Legacy support.

Message attributes:

RETCODEO=0	Sets online return code
RETCODEB=4	Sets batch (single user) return code
CLASS=E	Error class; the message can be suppressed with the X'04' bit setting of the MSGCTL parameter
AUDITER	Writes the message with line type ER to the audit trail
COUNT	Increments the error count (ERCNT) parameter
NOTERM	Does not display the message on the user's terminal

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