Syntaxis of output-file (.xml) for Dutch ICP Declaration

Gryphonrider

What's the correct value for 'Countrycode' in the output-file (.xml) for Dutch ICP Declaration in AX?
Is this different for 'Deliveries' from 'Services'?

In my .xml, both Belgian Deliveries and Services state 'BE':

<Levering>
<Landcode>BE</Landcode>
<Nummer>405792372</Nummer>
<Bedrag>308</Bedrag>
</Levering>

<Diensten>
<Landcode>BE</Landcode>
<Nummer>434850406</Nummer>
<Bedrag>35</Bedrag>
</Diensten>

For English Services it states 'OV':

<Diensten>
<Landcode>OV</Landcode>
<Nummer>GB765358105</Nummer>
<Bedrag>21535</Bedrag>
</Diensten>

For Austrian Services it states 'EU':

<Diensten>
<Landcode>EU</Landcode>
<Nummer>ATU23134409</Nummer>
<Bedrag>33</Bedrag>
</Diensten>

I personally think both 'OV' and 'EU' are not valid, and should be replaced by 'GB' and 'AT'.
Checking a Contoso-DB didn't help, this question is related to Dutch legislation.