It does not allow to return a delivery once invoiced

[Privete_member__1015064]

I have SAP B1 9.1 and tried to enter a return against a delivery which is already invoiced.

the status of the delivery is Closed since it it already invoiced.

I need to enter a return but the "copy to" button is disabled. Also I tried opening Return window and copy from. but delivery is not appearing in the list.

I also need to enter a credit note against the return

Note: cannot enter a credit note against the delivery as two different users are doing this and Items are batch enabled. so the stores guy have to take the return first and then the iinvocing/finance guy should raise the Credit Note based on the delivery

Please help me to rectify this issue.