Allocating a credit note to an invoice is a particular example of matching Purchase Ledger transactions.
Click menu Daybooks > Cash Book > Match PL Transactions.
The Match Purchase Ledger Transactions form is displayed.
Type the code for the relevant supplier.
Once you’ve entered all the details, click OK to record the allocation.
See more details in Match Sales or Purchase Ledger Transactions in the Cash Book section.
See the above links to see a detailed explanation of all the entry fields in these forms.