Use of SKTO?

Hi,

I purchase for 100 Euro

In the PO the SKTO is filled (based on payment term Z015) with 10 Euro (10%). Where effects this 10 Euro in SAP?

I mean I see the 10 Euro in the PO, but does it effect someting? Where can I see the effect of this 10 Euro besides the PO?

Thank you very much,

Eric van Zundert