[Bedrock Knowledge Base- Sharepoint] Sync error after initial success — "There was an internal server issue with"

t sounds like you're running into an issue with Amazon Bedrock Knowledge Base integration with SharePoint, where the first sync works, but subsequent attempts fail with an "internal server issue" error. Here are some troubleshooting steps and potential causes for this problem:

1. Review Amazon Bedrock Logs and SharePoint Logs Amazon Bedrock Logs: You can start by looking at the logs from Amazon Bedrock to gather more specific information about the failure. Check the logs for any error codes, timeouts, or service issues.

SharePoint Logs: Verify if SharePoint logs show any issues with connectivity or permissions during subsequent sync attempts.

2. Check API Rate Limiting SharePoint API Rate Limits: Ensure you're not hitting any rate limits imposed by the SharePoint API. After the initial successful sync, the repeated sync attempts may be triggering throttling or rate-limiting mechanisms on SharePoint's end. Review the SharePoint API rate limits to ensure you're within the acceptable bounds.

Bedrock API Rate Limiting: Similarly, Bedrock might have internal limits on how frequently data can be synced. If you're trying to sync too frequently, you may run into issues with request throttling.

3. Examine Data Source Access & Permissions Access to SharePoint: Double-check the IAM roles and permissions used by Bedrock to access SharePoint Online. Ensure that the permissions haven’t been inadvertently modified after the first successful sync.

Permission Configuration: If you’re using OAuth or other credential-based authentication, confirm that the credentials are valid and haven’t expired or been revoked.

4. Network Configuration Network Latency or Connectivity: Sometimes network issues can cause sync failures. Verify that both Bedrock and SharePoint have stable network connectivity during the sync. High network latency, intermittent connectivity, or service interruptions might cause the sync to fail after the first success.

5. Check for Service Limits Amazon Bedrock Service Quotas: Amazon Bedrock might have service limits or quotas that could be impacting subsequent syncs. These limits could include the number of concurrent requests or sync operations allowed within a given time window.

6. Verify SharePoint Changes SharePoint Changes Post-Initial Sync: Even though you've mentioned that the data source hasn't changed, there might be some subtle changes that are affecting the sync. For example, permissions or structure might have been modified since the first sync.

Large List Updates: If there’s a significant update to a list or library in SharePoint between syncs (e.g., many files added or modified), it could cause issues with syncing.

7. Retry with Debug Logging Enable Debug Logging: In some systems, enabling debug-level logging can provide more detailed information about what's happening during the sync attempt. This may reveal specific problems or errors.

Error Handling in SharePoint: Look for any error handling issues in SharePoint or the Bedrock service that could provide more insight into why the sync fails after the initial attempt.

8. Possible Bedrock System Issue Temporary Service Issues: It’s possible that there is a temporary issue within the Amazon Bedrock service itself. Check the AWS Service Health Dashboard to see if there are any ongoing outages or issues with Amazon Bedrock or related services that could be impacting the sync.

Contact AWS Support: If the problem persists despite your troubleshooting, AWS Support can investigate further into the specific internal server error message. You might need to provide additional diagnostic information, such as the exact timestamps of the failed syncs or any error logs that might have been generated.