How to clear open posting change notices (Movt type 309)


I want to clear the open PCN's created with mov type 309 (Posting change, general) being shown in LL01.

All these posting change quantity are positive. I am not able to nullify them because there is no stock of those materials.

Whenever I try to create a TO from LU04, the system is unable to take a storage type because of no stock.

Whenever I try to change the PCN;s status to :U", the system says that the souce data and dest data is same (both sloc's are same).

Please suggest an alternative to clear these PCN's.

Thanks in advance.