Customers from different sales area

I'm trying to copy a sales document for a specific customer, lets say customer #1 with a sales area 1200/10/40 to a customer #2 with a sales are of 1000/10/10.

When I create the document and change the customer to #2 I get the error saying "Sold-to party 10000014 not maintained for sales area 1200 10 40".

Is there any configuration that allows me to have this scenario?

I already change the copy routine 2 to a 902, but the error persists. My requisit is to be able to copy documents for customers with different areas.

Thanks in advance