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Determining the length of iSeries system values

How do I determine the length of iSeries system values? I would like to create a command from a menu that would be like WRKSYSVAL but allow only display. To do this, I have an RPG subfile program that calls a CLLE program with RTVSYSVAL. However, for many of the system values, I get the infamous CPF1095 message.
Try looking at the documentation for the Retrieve System Values (QWCRSVAL) API available on the IBM Information Center Web site. Go to Programming->APIs-> API finder, then type in the name of the API. The system values are listed in a table called Valid System Values.


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