When I use BMP to create a standard Approval Process in a PBO, then I link Action-SubmitForApproval to button in OWL_UI. Then I click Approval Button, it will throw warning message:

Process definition exists with configuration error

Task type exists with instantiation lock

Then ApprovalStatus will be changed from "not Started" to "Approval not necessary"

PrintScreen:

1) Approval Process: (ManagerID:EmployeeID, if(this.EmployeeID == this.NewManagerID){if(!ManagerID.isInitial()){this.ManagerID.Clear()}}else{this.ManagerID = this.NewManagerID})(ManagerID is just used for approval, and NewManagerID is for shown in fronted page)

Hope your help, thank you very much:)