(Pega Business Architect Essentials) - Designing a data model exercise
Hello,
Regarding the lesson "Create the invoice total property calculated as the sum of the items in the Selected Services field" in the Designing a data model exercise, I am encountering trouble. As you can tell by the picture, when I try to use the sum function on the correct field, none of the fields display in the drop down for me to choose.
What am I doing wrong?