Change Document Status to Open Feature

My client asked me that “I purchased the item, vendor bill is booked and outgoing payment is also done. Now I have to return the item to Vendor, but the problem is when I create an A/P Credit Memo in SAP Business One then it doesn’t allow me to take a reference of A/P Invoice (copy from) because  A/P Invoice is already closed due to outgoing payment is done. I wanted to be linked this A/P Credit Memo with that A/P Invoice. How I can do that?”

After that I explored it and later I found the solution J in 7 patch level. Here you will be shown in below screenshot.

1. Right Click on A/P Invoice and select Advance and then select Change Document Status to Open. This feature will show only when outgoing payment is done.

A/P Invoice

2.Then you will see the status Closed to Open. Now you can create A/P Credit Memo with a reference of A/P Invoive from "Copy From" once the status is changed to Open.

A/P Invoice