# Customers

When You're a Sales Invoice Administrator, managing customers is a core part of Your role. The Customers section in Settings is where You maintain all the buyer information that gets used when creating and sending sales invoices.

**Who can access Customers**: Sales Invoice Administrator (with full access to create, edit, and manage the customer register).

**What Customers does**:

* Maintains a central list of all Your buyers
* Stores key details like business registration numbers, addresses, and tax information
* Pre-fills invoice defaults (language, payment terms, currency) when You create invoices
* Supports automatic customer creation when You import sales invoices

**Why it matters**: A well-maintained customer register saves time during invoice creation and ensures consistent, correct customer data across all Your sales invoices.

For complete details on managing customers, see [Managing Your Customers.](/sales-invoices/getting-started/managing-customers.md)


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