Quantity round off during outbound delivery of Intercompany STO

Hello Experts,

I have one requirement where client wants quantity round off during creation of outbound delivery with reference to STO.

Suppose, i created STPO with 17quantities.When i create outbound delivery system should allow me to create deliveries for 10 or 20 quantities.It should not allow for 17 quantities.As the client deliver in cartons i,e 1 carton= 10 pcs.

Please let me know if SAP have any standard settings.

Santosh