Most likely the field size changes on requery. Try to wrap your expression with new CAST() function to avoid that.

>I get the error 1494 "View definition has been changed" when I requery my local view. This is only a problem if I use "NODATA" when opening the view. If I remove NODATA the view works as expected.
>

>Use appdata!lv_ins_operations Nodata
>Requery('lv_ins_operations')  && error 1494
>

>I have found out that if I take the following code out from the view definition the error goes away
>

>((100-(IIF(Prodgroup.lreject1,Insulators.rej_perc1,0)+;
>IIF(Prodgroup.lreject2,Insulators.rej_perc2,0)+;
>IIF(Prodgroup.lreject3,Insulators.rej_perc3,0)+;
>IIF(Prodgroup.lreject2b,Insulators.rej_perc2b,0)))/100) AS rejectcostdivider
>

>
>Prodgroup.lreject1,Prodgroup.lreject2,Prodgroup.lreject3,Prodgroup.lreject2b are of type logical
>Insulators.rej_perc1,Insulators.rej_perc2,Insulators.rej_perc3,Insulators.rej_perc2b are of type numeric
>
>
>Anybody knowing the reason?