For shipments outside of the EU (also GB after 2020) additional information is needed. This means the following data is mandatory:

If you use the service CONNECT

Additional reference: INVOICE is mandatory
Only DDU is possible as Incoterm

Mandatory shipmentlines
<Currency>

Mandatory Sender Details

<EORInumber>
<VATNumber>

Mandatory Invoice Details
<VATNumber> –> VAT number for UK entity

Mandatory delivery note lines

<description>
<HS code>
<nett weight>
<quantity>
<origin>
<price>
<reasonOfExport> May be: Others, Sale of Goods, Returned goods, Gift, Commercial Sample, Documents. This is not mandatory because if not filled it will be default Sale of Goods.

If you use the service EUROPLUS
Additional ref. INVOICE mandatory
All incoterms allowed but EXW not allowed

Mandatory shipmentlines
<Currency>

Mandatory Sender Details
<EORInumber>
<VATNumber>

Mandatory Receiver Lines
<VATNumber>

Mandatory delivery note lines
<description>
<HS code>
<nett weight>
<quantity>
<origin>
<price>
<reasonOfExport> May be: Others, Sale of Goods, Returned goods, Gift, Commercial Sample, Documents. This is not mandatory because if not filled it will be default Sale of Goods.