Can't select "Include Cost Calculation"

Question

As seen in the photo, I can't select to "include cost calculation". I've tried deleting the product system and remaking it, which didn't work. I made a dummy process and product system where I could include cost calculation and that worked fine. I downloaded the dummy process and the actual one to Excel and went through to try and find standout differences but couldn't. 

Update: Could it have something to do with having multiple possible providers? In the 'dummy' product system where I can calculate cost, there are 0 "links with multiple possible providers".

Thank you!

Answer 1

I figured it out--it does have to do with the default providers. If I select "Only link default providers" when setting up the product system it works. Still open to any suggestions about how to find specifically which processes don't have a default provider and delete them or assign a provider. Thank you!