BR-S-09 error
What this rule checks
Explanation
This is the standard-rated ("S") instance of the general per-category calculation rule BR-CO-17: for a VAT breakdown group whose category code is "S", the tax amount must equal the taxable amount multiplied by the rate (as a decimal, e.g. 20% = 0.20), consistent with the two-decimal rounding BR-CO-17 requires.
How to fix it
Recompute the tax amount for the standard-rated breakdown group as taxable amount × rate, rounded to two decimals, and compare against the value currently populated.
Check your corrected invoice
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