ZATCA XML Validation Issue – BR-CO-14 & BR-CO-15

While submitting the invoice XML to the ZATCA test validation portal, the XML may sometimes appear as valid, but the following errors can still occur during official ZATCA validation:

Issue Identified:

The errors BR-CO-14 and BR-CO-15 are caused by minor rounding differences between item-level tax calculations and the reported totals:

• BT-110 – Invoice total VAT amount
• BT-112 – Invoice total amount with VAT

Even a difference as small as 0.005 can trigger the error, and this is often only detected by ZATCA, not the test portal.

Resolution:

• Adjusting the rate of a single item slightly (e.g., 0.02) was enough to correct the discrepancy.
• After this adjustment, the invoice totals matched precisely, and the XML passed validation consistently.

Key Notes:

• Rounding differences at the item level can propagate to total amounts, causing BR-CO errors.
• The XML structure itself is valid (XSD passes), but numeric accuracy must be exact.