Please send the CODES for the supplementary units, not the friendly names. Consider , commodity 2809100000
The supplementary unit is “kilograms of diphosphorus pentoxide”. But you send back
You’re trying to send “kg P2O5” but it comes out as nonsense.
Since HMRC already have a code for “kilograms of diphosphorus pentoxide” - “005” - please send back that.
If you cannot send back “005”, please send something that doesn’t contain nonsense characters.
p.s. why was my message flagged as spam? Because it originally contained a link to the service in question? That’s daft.