Run the Change offer/order data to make changes to the sales offer or sales order header. For example, you could create a sales offer for a random customer, and change this customer at a later stage. This is useful if the party to whom you want to send the sales offer is not yet registered as a customer, or if you want to send the same offer to more than one customer.
The debtor data can be changed only if the total invoiced sum of the order is equal to zero.
A sales offer allows you to change other data than a sales order.