In this article
Key takeaways
- Compare the invoice issuer, not just the logo or bank description.
- A changed address does not necessarily mean a new legal supplier.
- A shared brand does not justify merging creditor accounts.
- Keep invoice and payment references attached to the correct entity.
Compare the fields that establish identity
Start with the legal name and address shown on the invoice. Compare the tax or VAT identification information where available, contract partner and invoice reference. Existing master data helps, but it should be checked against current evidence.
| Observation | What to establish before changing master data |
|---|---|
| Same company, new address | Evidence that the legal entity continues |
| Same brand, different GmbH | Whether this is a separate supplier relationship |
| Same name, different bank account | Authenticity and purpose of the change |
| New name after a reorganisation | Whether the entity changed or was renamed |
| Payee differs from invoice issuer | Documented collection or settlement relationship |
An IBAN can help explain settlement, but it is not sufficient proof of legal identity. A payment processor may collect for several suppliers. Conversely, one supplier can use more than one bank account.
Example: two locations under one brand
A client buys from two businesses using the fictional “Werkraum” brand:
- Werkraum München GmbH issues invoice M-81 for €600.
- Werkraum Leipzig GmbH issues invoice L-26 for €900.
The invoices name different legal entities. They belong to separate supplier records. The open balances are €600 and €900.
A €900 payment has the bank description “Werkraum” and reference L-26. The reference and supplier evidence identify the Leipzig invoice. After allocation:
| Supplier | Before payment | After payment |
|---|---|---|
| München GmbH | €600 payable | €600 payable |
| Leipzig GmbH | €900 payable | €0 payable |
| Total | €1,500 | €600 |
If the payment were first applied to the Munich account, the overall €600 balance could still appear plausible after further allocation. The wrong supplier would nevertheless be shown as unpaid. That error affects statements, reminders, credit notes and the next export.
Correct an existing identity mistake in order
First establish which invoices belong to each legal supplier. Then inspect where their entries and payments currently sit.
If the error is only an unposted master-data selection, correct the selection and check the proposed entry. If the invoice is already posted to the wrong account, use the appropriate reclassification or correction process and preserve the original reference.
Finally, check the payment allocation and both supplier balances. A corrected display name alone does not move an existing posting to a different creditor.
For exported records, also determine what the receiving software has imported. A local master-data correction does not automatically repair its ledger.
Ask a question that the client can answer
When evidence is incomplete, ask for the relevant fact or document: “The invoice names Leipzig GmbH, but the contract names München GmbH. Please send the current order confirmation or explain which company supplied this purchase.”
Avoid asking the client which creditor account to use. Account selection follows the clarified relationship.
Hans can identify and enrich counterparties from documents and business context. The firm can inspect that evidence and resolve ambiguous assignments. The aim is a reusable, correct supplier relationship, not merely a name that looks familiar.
Before the first export, use the creditor-mapping check. For month-end balances, see open-item reconciliation.
Sources
Sources were checked on 06 October 2026. This article provides orientation and is not tax, legal, or accounting advice.
- Published