A matching subtotal is not enough
In the example, the quoted labour is four units at A$100. The invoice uses five units at A$80. Both labour amounts are A$400, but the quantity and rate changed. A separate A$30 delivery line is also added, taking the invoice subtotal from A$600 to A$630. Both kinds of change are visible in the report.
Match identifiers and keep a consistent basis
Use the same item reference for the same quoted deliverable. The checker does not guess that two different descriptions mean the same item. Quantities and prices support up to two decimals, with line amounts rounded to cents. Compare like-for-like subtotals on the same tax basis. Discounts, GST, currency conversions and invoice-level adjustments are not included automatically.
Resolve each change before issuing
Check the accepted quote and any approved variation. A removed or added line may be correct, but a calculated difference does not establish approval or a legal right to payment. After resolving the report, manually review the final invoice descriptions, quantities, rates and subtotal in ABN Invoice. Neither pasted table is saved into an invoice draft.
Keep a review record
Run the check again whenever an input changes. Invalid or incomplete input clears the previous live result and disables download, so an old answer is not presented as current. Downloads contain the check table only; they are not a tax invoice, payment receipt or successful invoice export. They do not update drafts, history, login or payment status.
business.gov.au: invoice line details · Reference for the underlying recordkeeping or calculation concept; not an endorsement of this helper.