Resolve Error "The approval rule is in use and cannot be deleted" when Deleting Approval Rule for Journal Entry in Approval Process Manager

Scenario

User received error "The approval rule is in use and cannot be deleted" when deleting Approval Rule for Journal Entry in Approval Process Manager

Solution

Delete the Journal Entries created from the date range set on Approval Rule. 

Note: The action taken is not recommended. It is just to prove that it is a standard behavior that we could not delete an approval rule that is already applied to any transaction.