Condition

Hello,
I have one condition but from some reason it doesn't work.

1. Users would like a rule established that the Billing Status field cannot be populated to 'Send for Book & Bill' unless the Actual Completion Date is populate.

So under table, advance settings I put the condition:

([Billing Status]="Send for Book and Bill" and IsNull([Actual Completion Date])),"Actual Completion Date must be populated before updating the Billing Status to Send for Book and Bill")

Whether the Actual Completion Date is populated or not I got warning messages " Actual Completion Date must be populated before updating the Billing Status to Send for Book and Bill".

Do someone know what is the issue with this condition?

Thanks.

 

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Natasa Nedeljkovic
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