I am seeing this a lot more these days because of extensions in AX7. You tend to take the form run in the event and try to get a form control. A lot of developers seem to be hard coding the control name. Not wrong but not the best way to do it. A form control name could change or be deleted. Then you wont catch this until a user runs it. Not so good way: formRun.design().controlName(“MyControlName”) formRun. design().controlName(identifierStr(MyControlName)); The right way: formRun. design().controlName(formControlStr(MyFormName, MyControlName)); This way you get your errors during compile time.