# What is Validate-only deployment?

> A validate-only deployment asks Salesforce to process a deployment against the target org, including running the required Apex tests, and report any errors, without saving anything. It is the most reliable way to know a change will deploy before the moment it matters.

Source: https://synconai360.com/glossary/validate-only-deployment

Also called: validation deployment, dry-run deployment.

## Why it matters

Errors found by validation are real errors from the real org, not predictions, so validating before approval removes most deploy-day surprises.

## In SyncOnAI 360

Every SyncOnAI 360 proposal is validated against its target org after its named checks and before anyone approves it.

## Related terms

- [Salesforce deployment](https://synconai360.com/glossary/salesforce-deployment)
- [Pre-flight check](https://synconai360.com/glossary/pre-flight-check)
- [Apex test coverage](https://synconai360.com/glossary/apex-test-coverage)