> For the complete documentation index, see [llms.txt](https://docs.notionapps.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.notionapps.com/my-data-has-stopped-syncing.-what-could-be-the-issue.md).

# My data has stopped syncing. What could be the issue?

There could be a few reasons why your data would stop syncing: 

1. NotionApps has lost authorization access to your account.
2. You changed a database relation property from being a "Two-way relation" to a "One-way relation". 
3. You have a separate property named "title" other than the main property of type "Title". 

In most cases, to resume syncing, you can re-authorize or revert the change in your database and then click on "Reload Data" in your app builder. 

If the issue persists, please reach out to us on <help@notionapps.com>.&#x20;