copy of 601 movement without reference to Delivery

Hi,

I have created new movement type as 901(copy from 601 movement type) in OMJJ. I want to use this 901 movement without refrence to delivery in my project. In Account grouping and update control-Movement indicator L is available. But entry is in freezed mode so I am not able to remove movement indiacator L. So please guide me how can I achieve this? Is there any way?

Vijay