Get error for a new created Company

Hi

I create a new company, with all structure done, with Pur. Org. and Pur. Group. But when i want to raise a Shopping Cart, I get the error info. as:

Purchasing Group for Follow-on document missing.

Purchasing Org for Follow-on document missing.

and etc...

I have compare with other company within the system which is currently works well, and found no difference. May I know why I get this issue?