I'm trying to have this rule throw an error on the "Overall Assessment" field if it's not populated when I move the record to an Activity Status of "Completed".
Activity Status does not equal "Completed"
Overall Assessment does not contain data

I'm trying to have this rule throw an error on the "Overall Assessment" field if it's not populated when I move the record to an Activity Status of "Completed".
Activity Status does not equal "Completed"
Overall Assessment does not contain data
@damian_green23 Instead of the second condition and the setting of the error message, have you tried just setting the Overall Assessment field to 'Business Required'?