I started seeing this error msg on a flow that updates Campaigns which has lookups to Agency (Accounts) & Agent (Contacts). It wasn't occurring previously and it seems odd bc it started around the time I updated the Process Automation Settings page to reference a general Sys Admin license instead of mine. The Agency & Agent fields has had blank values in the past & present but it seems as though now it's an issue. Here's the logic on the Agency field (Filter Criteria | Agency: Account Record Type equals Agency). What else could be causing this. (It still doesn't happen in prod where yes, Agency & Agent are sometimes blank.)
I reviewed all records & the values in the lookup fields. They all have the correct record type but I'm still getting the same error.