BR-S-02: An invoice line taxed at the standard VAT rate (BT-151 = 'Standard…
What it means
An invoice line taxed at the standard VAT rate (BT-151 = 'Standard rated') is present, but the invoice does not state the seller's VAT identifier (BT-31), tax registration identifier (BT-32), or the tax representative's VAT identifier (BT-63).
How to fix it
Add one of BT-31, BT-32 or BT-63 whenever any line, allowance or charge uses the Standard rated VAT category.