Tax cannot calculated automatic (VAT) in receivables transaction

Hi all,

I have complecated problem. I was setup value added tax (VAT). I passed tax configuration setup, create configuration owner tax options for my operating unit and tax condition set with determining factor set value is STTC. but when I create transaction line (invoice) in receivables, tax cannot calculate automaticly and when I create tax manually, receivables line not change. receivables value should be change when we add a tax value in line. what should I do? what wrong with my setup?? any additional step to create VAT automaticly?? please help me guru..


Best Regards,

Ade Hilman