When you hit the "Check" button, the interpreter checks for the GDL syntax, but the group operations are not performed.
So your object has a correct syntax and you must search elsewere for the error.
For example, the user manual recommends that the object overlap a little, even for a SUM operation, not be side-to-side.
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--Roberto Corona--
www.archiradar.com
AC18 - ITA full on Win10
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