i was getting below error while using generative extractor in data extraction scope
initially it worked but suddenly it started giving error
Invoice Data Extraction Process: Request CorrelationId: 09a5f8d4-01cd-4d21-a8fb-218ac27e509d
Request PredictionId: oDIy4LJcvqVPCYfk2rNKqA9iRNwrZdQrZAv80u7mVTA=_eac91cc2-12cd-4121-ba0d-a5f5830252e8
An error occurred while sending the request.
Hi @prabhu.teja
Welcome to the community.
“An error occurred while sending the request” means it could be a network related issue, or DU endpoint related issue.
Below content is LLM generated:
Possible Causes & Solutions
1. Network Issues / Firewall / Proxy
- The robot might be unable to reach UiPath Cloud due to:
- A corporate firewall
- VPN issues
- Proxy misconfigurations
Solution:
- Ensure the robot machine has access to these domains:
*.uipath.comdu.uipath.com- Test internet access from the robot machine.
- If behind a proxy, ensure it’s set up in the
UiPath.configor via system environment variables.
- If the robot is not properly connected to Orchestrator or its license/token expired, the DU API request will fail.
- Open Assistant → Check robot is Connected and Licensed.
- Reconnect to Orchestrator if needed.
- Sometimes, using outdated versions of the IntelligentOCR or DocumentUnderstanding.ML.Activities packages can cause request issues.
- Open Manage Packages in Studio.
- Update:
UiPath.IntelligentOCR.ActivitiesUiPath.DocumentUnderstanding.ML.Activities
If this solves your issue, Do mark it as a solution.
Happy Automation 
Tried everything u mentioned but still having the same issue 
Hi @prabhu.teja
Could you check whether the AI units are exhausted?
It is under:
Admin → Licenses → Consumables → AI Units.
Yah I have units available
@prabhu.teja
Could you please attach the screenshot of your workflow
Cheers!!