Billing error

Hi all,

I am creating a billing from a SO. There are some errors:

0000000094 000010 The sold-to party could not be determined

0000000094 000010 The bill-to party could not be determined

0000000094 000010 The payer could not be determined

I have check Partner Function in Customer master.

What and why have to checked more? Help me pls!

Quang,