Currently, UPS treats the EORI and VAT numbers as the same field, but there are cases where both numbers are provided separately and need to be transmitted for customs clearance. The EORI number is specifically required for customs clearance, while the VAT number may be needed for accounting purposes or to comply with tax regulations. To ensure accurate data submission, both fields should be available for the sender, shipper, and billed parties, as these details may vary depending on the shipment. This change would help prevent compliance issues and ensure smoother customs processing.