AX 2009 - AIF - document schema

hi,

I would like to set fields in schema for inbound documents in AIF. I disabled default policy. On fields list for CustService, there are few fields which I can't sets. Example custGroup, TaxGroup and so on. Some of this fields are mandatory in table but not all. Those fields have minOccur to 1. When can I set this properties?

best regars,

Jacek