We use the Lead Source field on both our Contact pages and on Opportunities, but to capture different information. I have made certain picklist values available for the Lead Source field on our Contact Record type that are not available on any of the Opportunity record types. Since we made the switch to Lightning, every time we create a new opportunity (using the 'New' button on the opportunities related list on a contact page) the lead source value from the related contact auto-populates into the opportunity, even when that value has not been made available on that opportunity record type. Note that Lead Source is a required field on our Contact pages, but not on Opportunities, where it is often intentionally left blank.
This created some errors for us before we realized that it was happening.
How do I stop the Lead Source field on opportunities from being auto-populated?
Lead Source is a required field on all Contact pages but not on opportunities.
