To change the application post date

If the application of the credit memo has not yet been posted:
 

     
    1. Open the credit memo.
       
    2. On the Credit Memo tab, click Application History.
       
    3. Change Post Date field to the appropriate date.

    If the application of the credit memo has been posted, the application post date cannot be edited:
       
      1. Delete the credit memo.
         
      2. Post the reversing entries.
         
      3. Re-enter credit memo with the correct application post date.