Recomputes line VAT, per-category tax subtotals, tax total, and grand total from an invoice's line items under a supplied rounding convention, then compares the result against the document-asserted amounts. Reverse-charge and zero-rate categories are treated as zero VAT regardless of any stated rate. Verifies arithmetic consistency only, not the legal correctness of the underlying rate. Zero network.
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Scope
Middle node of the einvoice-validation-pipeline chain (art-293→294→295→296). Verifies internal arithmetic consistency only; does not assert the applied VAT rate is statutorily correct. See einvoice-validation-pipeline chain.