It is mandatory for every vendor to have a VAT ID. The company data that you submit to us must match 1:1 with the data submitted to the Federal Central Tax Office (BZSt). The VAT ID of the country in which you are domiciled applies.

Is your VAT ID repeatedly marked as invalid? Please take a look here: Why is my VAT ID marked as invalid?

See also: Information about the VAT Check

I am a sole proprietor/small business owner and exempt from paying VAT:

Even sole proprietors or small entrepreneurs, who are normally exempt from VAT, must have a VAT ID in order to sell on Avocadostore