# Batch load customers

Source: https://developer.avalara.com/products/ecm/integration-guides/document-management/zxh2583542672601/

Guide: Exemption Certificate Management (ECM)

# Batch load customers

Learn how to batch load customer information using the CreateCustomers API.

**Element type: Suggested**

**Endpoints used**: [CreateCustomers](https://developer.avalara.com/api-reference/avatax/rest/v2/methods/Customers/CreateCustomers/)

Your integration should provide a utility to load customer information in batches rather than one at a time. To do this, the integrator can create a batch process that will loop through all your customers and automatically call the [CreateCustomers API](https://developer.avalara.com/api-reference/avatax/rest/v2/methods/Customers/CreateCustomers/) for each one.