> This page is for Documentation, version Integration guides (default).
> For other versions, use one of these documentation indexes:
> - Integration guides (default): https://avalara.ferndocs.com/docs/integration-guides/llms.txt
> - Refactor guides: https://avalara.ferndocs.com/docs/refactor-guides/llms.txt
> - Get certified: https://avalara.ferndocs.com/docs/get-certified/llms.txt
> - Agent to Agent (A2A): https://avalara.ferndocs.com/docs/agent-to-agent-a2a/llms.txt
> - AI use cases: https://avalara.ferndocs.com/docs/ai-use-cases/llms.txt
> - API versioning: https://avalara.ferndocs.com/docs/api-versioning/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://avalara.ferndocs.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://avalara.ferndocs.com/_mcp/server.

# Test transactions

The examples in this section are based on the Nexus settings that are described in the [Create and activate a company](https://developer.avalara.com/erp-integration-guide/configure-your-avatax-account/create-and-activate-a-company-sales-tax) topic. If you set up your test company the same way, you'll see the same responses when you run these examples. In addition, the examples in this section are broken out into Core requirements and Refunds.

* All integrations must review the Core requirements examples.

* If you're also attempting to get certified in the Refunds advanced feature, then review and run the Refunds examples.

> **Note**
>
> Part of the **ERP** integration guide. [Open the full "Test transactions" milestone on Avalara](https://developer.avalara.com/erp-integration-guide/test-transactions/) to see every page in this section.