The Created Transfer L/C contract can be closed at any time for several reasons.

To close the transfer L/C,  LTTCAN transaction is used.  

Select it from the menu item [Export Products ->Transfer L/C -> Other Transfer L/C -> Close]. 

(Users can directly start this transaction by clicking the  (Launch transaction ) available in the Panel headline without having to select the relevant menu ) 

When you have made your changes, click on the ( )  Save function to save all the the data entered in the transaction to the database.