Cannot Create Credit Memo From Return

Hello,

I am running SAP B1 version 9.0. When I try to turn a particular return into a credit memo, I get the following error message: "Account 5200-02 is inactive". When I look at that account, it is marked active, but it's in light green lettering. We've never run into this problem before and have created many credit memos from returns. Is there a way I can choose the account I want to be affected? I want it to reflect the same accounts that the sale was made on (5000-00), not 5200-02. Keep in mind this is an item invoice, not a service invoice, so I don't have the option of choosing the account on the main screen.

Thank You,

David