What is wrong with this formula?

[Kata Soltesz]

I would like to calculate all issues that either due compared to the Requested Delivery Date or doesnt have a date:

COUNT([Measures].[Issues created]-([Measures].[Issue Requested Delivery Date]<Now()))

I get the following error message:

Formula is not valid: 
No function matches signature '<Member> < <DateTime>'

Thanks for the help!

[Grigory Salnikov]

Hi, @Kata Soltesz and welcome to the Community!

I assume that your project's name is "Measures", correct me if I'm wrong.

I'd write something like this:

project = Measures AND ( "Issue Requested Delivery Date" < now() OR "Issue Requested Delivery Date" is EMPTY )