# Troubleshooting
Source: https://nordvec.com/cs/docs/guides/troubleshooting

Fixes for the sync errors and plan limits you can meet, each starting from the message you see.



Each page starts from the message Nordvec shows you, explains why it appears
and walks through the fix. For errors an API request returns, see
[Errors and rate limits](/docs/guides/errors-and-rate-limits).

- [Reconnect a connector](https://nordvec.com/cs/docs/guides/troubleshooting/reconnect-integration): Fix "authentication has expired" and "access has been revoked" sync errors by reconnecting the affected connector.
- [Grant missing permissions](https://nordvec.com/cs/docs/guides/troubleshooting/insufficient-scopes): Fix "missing required permissions" sync errors by reconnecting the connector and approving every requested permission.
- [Document limit reached](https://nordvec.com/cs/docs/guides/troubleshooting/document-limit): What happens when your plan's document limit pauses syncing, and how to free space or upgrade to resume.
- [Daily processing limit reached](https://nordvec.com/cs/docs/guides/troubleshooting/daily-processing-limit): What happens when your workspace's daily processing limit pauses syncing, and when it resumes.