Payer Used Old Vendor Number in Remittance Email Template

Use this page when the payer has sent payment or remittance using an old vendor number, legacy supplier code, or outdated account reference that no longer matches how your team books the customer today. This is not just a generic reference mismatch. The specific risk is that money may already be moving, but the payment is hard to reconcile because the payer is still identifying you through obsolete AP master data. That makes the page useful in a very exact business moment. The email should ask them to confirm which old vendor number they used, what the current vendor number should be in their system, which invoices the payment relates to, and whether future remittance files will be updated to stop the mismatch recurring. The outcome you want is both immediate clarity for this payment and a fix to the master-data reference that caused the problem. It is commercially strong because the visitor is already trying to keep real cash from falling into unapplied status due to an avoidable AP identity mismatch.