Supporting documents for invoice approval: send the relevant evidence

Translate “send supporting documents” into a specific request

Ask whether the missing evidence concerns the agreed scope, quantity, completion, an extra item or a customer reference. Those questions need different records. A signed attendance sheet might address whether a visit occurred; it may say nothing about whether an additional fee was agreed.

A useful clarification is: “For INV-640, is the approver checking the two visits on line 1 or the additional repair on line 2? Which document or confirmation is needed?” If the problem is simply that no approver has picked up the invoice, use the approval delay status request instead of sending unnecessary attachments.

Build a small index for the questioned lines

In this fictional example, INV-640 has two maintenance visits at £180 each and an additional £95 repair: £360 + £95 = £455. Accounts asks about the second visit and the authority for the repair.

The index distinguishes evidence of a visit from evidence of an agreed extra charge. Neither row declares that every possible dispute is resolved. If you cannot find the requested record, say what you have and ask what alternative the approver can review; do not create retrospective approval.

Send a short explanation with the requested record

Subject: INV-640 — supporting record for the second visit

Hi [confirmed accounts contact],

You asked for the record of the second visit included in line 1 of INV-640.

Attached is the relevant extract from job sheet J-67. Page 2 identifies the visit on 5 November 2026 at [the invoiced site]. This relates to the second of the two visits charged on line 1, which totals £360.

Could you confirm whether this answers the approver's visit query, or name the remaining point they need checked?

The separate query about the £95 repair remains open; I will reply with the change record by [date].

Thanks,
[name / business]

This fictional email supplies one requested record and leaves the second question visibly open. Adapt the final paragraph to the actual position; do not claim that an entire invoice is cleared because one line now has evidence.

Check the attachment and preserve the next decision

Use the confirmed recipient or customer portal. Open the file, check the named page and remove unrelated customer records or unnecessary personal information from the copy you share. Preserve the original internally and label an extract accurately; do not remove context that would change its meaning.

Record what you supplied, when, to whom and which query it addresses. Receipt closes the delivery question; an answer from the approver establishes whether the stated evidence gap is resolved. If they still disagree about scope or price, continue through the invoice query workflow.

At your next invoice review, check the reply and payment records yourself before deciding on further follow-up. Keep routine reminders paused while a substantive query remains open, and update the reminder record with the confirmed outcome.