Sales invoice appearing under different customer in AR after sales update

Hi All,

In JDE 9.1 , an issue has been reported by user that the sales invoice is reflecting under a different customer in AR after sales update

I checked in F03B11 , customer number is different than the sold-to number in sales order detail.

This customer (appearing in AR) is not set anywhere in Address book related customer.

Please advise if any standard JDE setup issue or user transaction issue could have caused this. It is impacting month end closure.

Thank you