XBert Type: Standard
Accounting Software: Xero, MYOB, QuickBooks Online
Country Restriction: Australia only
Risk Type: Tax Risk
Business Function: Purchases
Overview
The "ABN on bill attachment different to supplier" XBert checks whether the ABN shown on a bill's attached document matches the ABN recorded for that bill's supplier in your accounting software. When the two ABNs don't match, the bill may be linked to the wrong supplier, which can lead to incorrect GST claims and BAS reporting errors.
What it does
XBert reads the ABN from the document attached to a bill and compares it to the ABN held against the supplier's contact record. It looks at recently added attachments and flags a bill when the attachment shows a clear, different ABN to the one on the supplier.
Compares the ABN on the attached document with the supplier's ABN in your contact list.
Helps confirm each bill is matched to the correct supplier so your GST is reported correctly.
Only looks at bills that have an attachment with a readable ABN on it.
How it works
When your data syncs, XBert reviews bills added in the last three months that have one or more attachments. For each one it reads the ABN from the attachment and compares it to the supplier's recorded ABN.
It raises an alert when the ABN on the attachment is clearly different to the supplier's ABN. To keep the alert accurate, XBert deliberately ignores these situations:
Bills that have been voided or deleted.
Suppliers with no ABN recorded, or attachments where no ABN could be read.
Cases where the only difference is a masked ABN (for example QuickBooks Online hides part of the number) but the visible digits still match.
Bills where more than one ABN appears on the attachment, where several bills share the same supplier and attachment ABN, or where the bill has multiple attachments — these are handled by separate XBerts.
Attachments that are clearly BPAY or PayPal identifiers rather than a supplier ABN.
Bills where every attachment is something other than a source invoice or bill — such as a receipt, statement, certificate or email — so the mismatch isn't treated as a supplier-invoice problem.
If an attachment hasn't yet been classified, XBert still checks it, because it could be the genuine supplier invoice.
Example/Use Case
Steve runs a printing business. He uploads a tax invoice from Bob's Burgers to a bill in Xero. The Bob's Burgers contact in Xero still carries an old ABN, but the invoice on the attachment shows a different, current ABN. XBert flags the mismatch. Steve checks the document, sees the supplier has updated their ABN, and corrects the contact record — keeping his GST claim and BAS accurate.
In another case, an automated document tool misfiles a $48 taxi receipt against a catering bill. The ABN on the attached receipt doesn't match the catering supplier, so XBert raises the alert. The team removes the wrong attachment and adds the correct catering invoice, avoiding a miscoded expense and a GST error.
Accounting software
Xero, MYOB and QuickBooks Online.
Which countries it supports
Australia only.
Processes
This XBert is part of the Purchases (Accounts Payable) business area.
To resolve this alert:
Open the bill and review the attached document alongside the supplier's contact record.
Confirm which ABN is correct — the one on the attachment or the one held against the supplier.
If the supplier's ABN is out of date, update their contact record with the correct ABN.
If the wrong document was attached, replace or remove it and attach the correct supplier invoice.
If an automated capture tool misread the document, recheck the captured details and correct them.
Once the bill and supplier details are correct, mark the XBert as resolved.
Keeping supplier ABNs accurate supports correct GST and BAS reporting and helps you avoid rework if you're audited by the ATO.