Skip to main content
Showing results for 
Search instead for 
Did you mean: 

Find everything you need to get certified on Fabric—skills challenges, live sessions, exam prep, role guidance, and more. Get started

New Member

Conditional Sum for Amount


I am new to Report Builder and I am seeking assistance to write an expression that is a conditional sum.

I am attempting to sum the “Check/EFT Amount” values, if the “Check/EFT Number” is between the first and last “Check/EFT Number” values of the semantic model dataset. The first and last “Check/EFT number” values are dynamic value and will change based on the provided parameter date value. The Starting query below is the query from SAP business objects that I am attempting to replicate in Report Builder.


The Error I receive is “uses a First, Last or Previous aggregate in an outer aggregate.  These aggregate functions cannot be specified as nested aggregates.”


For reference, I have attempted to use Min and Max, which avoids the error but the resulting values are different than First and Last. Therefore I do not receive the expected sum amount. I have also attempted a custom code solution with no success.


Starting Query (SAP):

 =Sum([DISB Actg Line Check Amt])

Where ([DISB Hdr Check No] >= [Var - Begin Check Number ] And [DISB Hdr Check No] <= [Var - End Check Number])


My Report Builder Expression:

=Sum(IIf(Fields!Check_EFT_Number.Value >= First(Fields!Check_EFT_Number.Value) And Fields!Check_EFT_Number.Value <= Last(Fields!Check_EFT_Number.Value), Fields!Check_EFT_Amt.Value, 0))




Super User
Super User

cuold you pls provide some sample data and exepcted output?

Did I answer your question? Mark my post as a solution!

Proud to be a Super User!

Helpful resources

Europe Fabric Conference

Europe’s largest Microsoft Fabric Community Conference

Join the community in Stockholm for expert Microsoft Fabric learning including a very exciting keynote from Arun Ulag, Corporate Vice President, Azure Data.

July 2024 Power BI Update

Power BI Monthly Update - July 2024

Check out the July 2024 Power BI update to learn about new features.

July Newsletter

Fabric Community Update - July 2024

Find out what's new and trending in the Fabric Community.