To apply a 0% VAT on EU exports, businesses must prove goods left the EU by collecting timely, consistent documentation like customs declarations, transport documents, and invoices. This evidence must be retained for audits and kept digitally. Common errors include incomplete or delayed paperwork, inconsistencies, and unverified third-party reliance.
Source: polishtax.com
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.