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# What causes the “max length constraint” error during upgrades?

The **“max length constraint” error during upgrades** in XTEN-AV typically occurs when some input data entered during the upgrade process exceeds the allowed character limit defined by the system. This can happen if fields such as organization name, billing details, address, or custom inputs contain more characters than permitted, causing the system validation to fail and block the upgrade.

**To resolve this**

**Contact the Sales Team**
* You can reach out to the Sales team for assistance with upgrading your subscription.

**Contact Support**
* You can contact us via chat support or email us at support@xtenav.com for further assistance.