Sales order with more than 9 items causing problem

Hi,

I have a situation here.

A sales order is created in the system and since it is order related billing so its billing document is also generated. The billing document is not relevant for accounting. So, the only 2 documents are a sales order and its billing document.

Due to some technical restrictions,if the number of lines is more than 9 the printout wont come.Henceforth,the user is unable to take a printout so I need to give him a solution.

What shall I suggest him?