XBert Type: Standard
Accounting Software: Xero, MYOB, QuickBooks
Country Restriction: AU only
Risk Type: Tax Risk
Business Function: Purchases
Overview
The "Multiple ABNs on attachments for supplier bill" XBert highlights bills that contain multiple attachments showing different ABNs, which may not align with the supplier’s recorded ABN in your accounting software. This discrepancy may indicate an error in the bill setup or issues with the attached documentation.
What it does
XBert scans bills that include more than one attachment and checks each for a valid ABN.
If two or more attachments on the same bill contain different ABNs
And at least one of those ABNs does not match the supplier's recorded ABN
XBert triggers this alert to flag the inconsistency
How it works
XBert uses automated data extraction to identify ABNs on attachments
If multiple ABNs are detected across a bill's attachments and at least one doesn’t match the supplier’s contact ABN, the alert is generated
This helps surface potentially misfiled or mismatched documentation that could affect GST reporting
Example/Use Case
Steve processes a bill for Bob’s Burgers in Xero and attaches two documents. One is a legitimate invoice from Bob’s Burgers (ABN: 345982333), but the second is a scanned taxi receipt from 13-CABS (ABN: 898934899) that was added by mistake.
Even though the ABN for Bob’s Burgers is correct, the presence of a mismatched ABN on the second attachment causes confusion. If left unchecked, this could lead to errors in GST claims, poor audit trails, and compliance issues with the ATO.
Accounting software
Xero, MYOB, QuickBooks
Which countries it supports
Australia only.
Processes
This XBert is part of the Bookkeeping – Purchases (AP) category.
To address this alert:
Open the bill and inspect all attachments
Confirm which ABN(s) are correct and whether all attachments belong to the supplier
If needed:
Remove incorrect attachments
Split items across multiple bills if attachments belong to different suppliers
Request a corrected invoice from the supplier
Keeping attachment records aligned with supplier ABNs ensures your business stays compliant and avoids costly GST errors or audit challenges.