Buyer Detail for Standard Invoice

Hi,
If Buyer is
Export or Intra-GCC supplies
Nominal supplies
Non-taxable legal person More than or equal to SAR 1000

then what detail to Pass in
cac:AccountingCustomerParty
or
cac:PartyTaxScheme
cbc:CompanyID</cbc:CompanyID>
cac:TaxScheme
cbc:IDVAT</cbc:ID>
</cac:TaxScheme>
</cac:PartyTaxScheme>

Pls help me.