---
title: "Customer master data: definition | Rex glossary"
description: "The core record for each customer in the ERP: legal entity, billing and remit-to addresses, contacts, payment terms, tax details and credit limit."
canonical: https://www.rex.inc/glossary/customer-master-data
---

# Customer master data

The core record for each customer in the ERP: legal entity, billing and remit-to addresses, contacts, payment terms, tax details and credit limit.

Many order-to-cash errors trace back to master data. An outdated billing contact sends invoices to nobody, a missing PO requirement gets invoices rejected, and mismatched payment terms produce arguments about due dates.

Master data drifts as customers reorganize, change AP teams or move to new portals, so it needs maintaining continuously, not just at onboarding.

How Rex helps

Customer setup

Agents keep customer contact, billing and account details up to date.

[See how it works](https://www.rex.inc/customer-setup)

## Related terms

- [Supplier onboarding The paperwork a new customer needs before it will pay you: vendor forms, tax documents, bank details and portal registration.](https://www.rex.inc/glossary/supplier-onboarding)
- [Payment terms (Net 30) The agreed conditions for paying an invoice. Net 30, for example, means the full amount is due 30 days after the invoice date.](https://www.rex.inc/resources/glossary/payment-terms-net-30)
- [Credit limit The maximum outstanding balance a business lets a customer carry before new orders are held or reviewed.](https://www.rex.inc/glossary/credit-limit)

Next step

Accelerate your receivables operation with Rex

A short walkthrough of agents working your accounts under your guardrails, with your team on the exceptions.

[Learn more](https://www.rex.inc/learn-more)

[Back to the glossary](https://www.rex.inc/glossary)