# Epicor Kinetic guides

> Practical guides to Epicor Kinetic queries, the REST v2 API and where custom business logic belongs, written for administrators and developers.

Source: https://docs.lumina-erp.com/epicor-kinetic/

**In short.** These guides cover BAQs that total correctly, API calls that page and filter properly, and when to use a Function, a BPM or an application change.

Epicor Kinetic is the ERP system Epicor sells to manufacturers and distributors. These guides cover the three places people most often get stuck: queries that return the wrong totals, integrations built on the API and custom logic put in the wrong layer.

- [BAQ fundamentals, and the calculated-field mistakes that make totals wrong](https://docs.lumina-erp.com/epicor-kinetic/baq-fundamentals.md): How Kinetic Business Activity Queries are built, why query grain decides whether totals are right and the calculated-field mistakes behind wrong BAQ reports.
- [Calling the Kinetic REST v2 API](https://docs.lumina-erp.com/epicor-kinetic/rest-v2-api.md): Kinetic REST v2 in practice, covering the URL shape, API keys, how $filter and $expand behave, why child collections come back empty and paging.
- [Epicor Functions, BPMs or customizations?](https://docs.lumina-erp.com/epicor-kinetic/functions-bpms-customizations.md): Decide where custom logic belongs in Epicor Kinetic, whether a BPM directive, an Epicor Function or an Application Studio layer, and what each is for.
- [Building useful Kinetic dashboards on BAQs](https://docs.lumina-erp.com/epicor-kinetic/dashboards-from-baqs.md): Design Epicor Kinetic dashboards people trust, from the question and the BAQ behind each grid to parameters, security, performance, testing and governance.

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Epicor, Prophet 21, P21 and DynaChange are trademarks or registered trademarks of Epicor Software Corporation registered in the United States and other countries. Kinetic is a trademark of Epicor Software Corporation. Lumina ERP is an independent consultancy and is not affiliated with, sponsored by or endorsed by Epicor.