An Invoice that contains an Invoice line (BG-25), a Document level allowance (BG-20) or a Document level charge (BG-21) where the VAT category code (BT-151, BT-95 or BT-102) is “Split payment" shall not contain an invoice line (BG-25), a Document level allowance (BG-20) or a Document level charge (BG-21) where the VAT category code (BT-151, BT-95 or BT-102) is “Standard rated”.
Explanation
An invoice using the 'split payment' category must not contain any line, allowance, or charge using the 'standard rated' category — the two are mutually exclusive.
How to fix
Use either 'split payment' or 'standard rated' consistently across the invoice.