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>If the field really is a constant that will never change even in the exporter, I don't see the benefit >of export/import-const over a copy file with named constants. You're right. Since the use of Const in a procedure parameter means that the recipient cannot modify the field, the keyword Const on a variable should also mean the same thing; so it could be modified within the module, but outside the module there is only 'read only' access to it. So I guess there is a difference between what I'm suggesting and what's being suggested with a Data Structure constant. In regard to the Data Structure constant, what I something like the example below could be done? So no longer is it 'S/U', it's 'Type' or 'C/S/U'. Just brainstorming. DayOfWeek CDS Qualified Then if you wanted to export this (for whatever reason... I guess I personally never got into the /copy stuff), you could do: DayOfWeek CDS Qualified Export Const (or even better, imply the keyword Const when it is a Constant Data Structure). Kurt
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