---
title: Does SMSGatewayCenter validate my flow before save?
description: "Yes. Before saving, the system checks: non-empty **screens** array; no screen id **SUCCESS**; at least one **terminal** screen with `terminal: true` and at least one with `success: true`; and allowed **on-click-action** names. If validation fails, save is rejected with an…"
url: "https://www.smsgatewaycenter.com/blog/kb/does-smsgatewaycenter-validate-my-flow-before-save/"
updated: "2026-07-26"
category: WhatsApp Business API / WhatsApp Flows
---

# Does SMSGatewayCenter validate my flow before save?

Yes. Before saving, the system checks: non-empty **screens** array; no screen id **SUCCESS**; at least one **terminal** screen with `terminal: true` and at least one with `success: true`; and allowed **on-click-action** names. If validation fails, save is rejected with an error message.

### More Related Articles

- [Who can see my flows and responses?](https://www.smsgatewaycenter.com/blog/kb/who-can-see-my-flows-and-responses/)
- [Does SMSGatewayCenter share my flow JSON with third parties?](https://www.smsgatewaycenter.com/blog/kb/does-smsgatewaycenter-share-my-flow-json-with-third-parties/)
- [Is flow response data secure?](https://www.smsgatewaycenter.com/blog/kb/is-flow-response-data-secure/)

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