When editing a feature service in ArcGIS Pro with attribute rules applied, the error message is returned, "Unable to complete operation. Setting of value for md_variance failed."

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Solución alternativa

The correct script:

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var startDate = date($feature.md_planned);

var endDate = date($feature.md_actual);

var Diff = DateDiff(endDate, startDate, 'days');

var FinVar = Diff/30.5;

If (IsEmpty(startDate) || IsEmpty(endDate))

{ return null; }

else return FinVar

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Pasos para reproducir