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ERP Testing: Unit Tests, Integration Tests, and User Acceptance Testing

📅 June 10, 2025 ⏱ 8 min read
ERP testing UAT ERP system testing ERP
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ERP testing is not an IT task — it is a business process validation exercise. This guide explains what to test, who tests it, and how to know when you're done.

Unit Testing: Does Each Function Work

Unit tests verify that individual ERP functions work correctly — that a sales order saves correctly, that a payment posts to the right account, that a production order correctly consumes materials.

Integration Testing: Does the System Work Together

Integration tests verify that ERP functions work correctly in combination — that a sales order flows through to inventory reservation, invoice creation, and AR update without data loss or distortion.

User Acceptance Testing: Does It Work for Users

UAT is conducted by business users following real business scenarios. Every test case should mirror an actual business transaction — not a theoretical test designed to pass.

Regression Testing After Configuration Changes

Every time ERP is configured, customized, or upgraded, regression testing verifies that previously working functions still work. Skipping regression testing causes go-live surprises that should have been caught in development.

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