+1. We are also making invoicing integrations and this VAT number field is quite crucial to be exposed in API.
Shopify, please expose this field in the API. After all these B2B features rolled out for all plans and added native VAT number field - it’s still impossible to properly create an external invoicing automatisation.
Especially for merchants like us who sell on omni-channel, and cannot rely solely on Shopify invoicing feature. 