You can use this transaction to change an FI invoice, for example the customer line item text. You need to identify the FI invoice by document number (range is 90000000 - 999999999).
Role ZSBM => Accounts Receivable=> Document => FB02 - Change Document
If you enter a valid document number, the FI invoice displays as shown below.
To change the customer line item text,
To view additional documents associated with this FI invoice,