Crediting A/R Reserve Invoices 
Use one of the procedures below to credit customers for A/R reserve invoices, even if these have been delivered fully or partially. This may be necessary if the customer has already received the A/R reserve invoice, but received damaged goods, and would now like to be reimbursed for the expenses.
Prerequisites
An A/R reserve invoice exists for the customer.
Procedure
Copying an A/R Reserve Invoice into an A/R Credit Memo
From the SAP Business One Main Menu, choose
Sales – A/R 
A/R Reserve Invoice 
and open the relevant document.Click the Copy To button and select A/R Credit Memo.
The A/R Credit Memo window appears listing all items that were included in the A/R reserve invoice. If not all the items have been delivered yet, the original item line is divided into two parts – one for the delivered items, one for the non delivered items. If there are several related deliveries based on one A/R reserve invoice, the items are divided according to the delivery. The delivery number is displayed in the A/R credit memo.
Enter the necessary data and choose Add.
The A/R credit memo for the A/R reserve invoice is created.
Copying an A/R Credit Memo from an A/R Reserve Invoice
From the SAP Business One Main Menu, choose
Sales – A/R A/R Credit Memo .Specify the relevant customer.
Click the Copy From button and select A/R Invoices.
The List of A/R Invoices window appears.
Select the A/R invoice that you want to credit and click Choose.
In the Draw Document Wizard window, select which exchange rate to use and how to copy the data into the credit memo, and choose Finish.
Enter the necessary data and choose Add.
The A/R credit memo for the A/R reserve invoice is created. If not all the items have been delivered yet, the original item line is divided into two parts – one for the delivered items, one for the non delivered items. If there are several related deliveries based on one A/R reserve invoice, the items are divided according to the delivery. The delivery number is displayed in the A/R credit memo.
Result
The A/R credit memo for the A/R reserve invoice is created.