> ## Documentation Index > Fetch the complete documentation index at: https://docs.cognigy.com/llms.txt > Use this file to discover all available pages before exploring further. # Errors The error types are specific to each component. In Ops Center, you can view: * All errors across services on the **Overview** tab. * Errors for a specific component by opening its corresponding tab. Errors from the past 7 days are displayed, including both run-time errors and those encountered in the Interaction Panel. To investigate a specific error: 1. Open the **Errors** page. Click the error to see its details in the **Error Details** window. 2. Click **Go to ``**, for example, **Go to Flow** or **Go to Endpoint**, to open the page where the error occurred. Find the error by its code and follow the recommended steps to fix it. Ops Center Errors page with error details and navigation to resources ## List of Errors | **Error Code** | **Error Name** | **Recommended Action** | | ------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `ERR_ENDPOINT_001` | Endpoint Input Transformer Failed | Check the Endpoint's transformer settings, logs, and input mappings for errors. | | `ERR_ENDPOINT_002` | Endpoint Output Transformer Failed | Check the Endpoint's transformer settings, logs, and output data format for errors. | | `ERR_ENDPOINT_003` | Endpoint Execution Finished Transformer Failed | Check the Endpoint's transformer settings. Validate the final execution transformer logic. Ensure it properly handles the final payload and any cleanup logic. | | `ERR_ENDPOINT_004` | Endpoint Inject Transformer Failed | Check the Endpoint's transformer settings. Check the injection logic that modifies request and response data. Ensure injected variables exist and are valid. | | `ERR_ENDPOINT_005` | Endpoint Notify Transformer Failed | Check the Endpoint's transformer settings. Confirm that the notification transformer logic is implemented correctly. Validate event payloads and downstream subscribers. | | `ERR_FLOW_001` | Flow Node Execution Failed | Go to the Node and review its parameters. Use logs and the Interaction Panel to debug the Node. | | `ERR_FLOW_002` | Flow Outbound HTTP Call Failed | Check the outbound HTTP call settings: HTTP Request Node, endpoint URL, headers, auth, and payload. Test connectivity and response format. | | `ERR_FLOW_003` | Flow NLU Intent Misconfigured | Go to the Flow. Ensure the NLU Intent exists, is correctly configured, and trained. Retrain if needed. | | `ERR_FLOW_004` | Flow NLU Embedding Model Misconfigured | Go to the NLU embedding model in the Project settings and check that the model is correctly configured. | | `ERR_FLOW_005` | Flow Generative AI Model Misconfigured | Go to the model in the LLM configuration. Check the model is correctly configured, test its connection, verify API keys. | | `ERR_FLOW_006` | Flow Knowledge AI Embedding Model Misconfigured | Go to the embedding model in the LLM configuration. Check the model is correctly configured, test its connection, verify API keys. Ensure the Knowledge AI embedding model is deployed and accessible. | | `UNKNOWN` | The error occurs when Ops Center can't determine the error type or identify which resource, such as LLM, Flow, NLU, or others, the issue occurred in. | Use the information from the **Message** section in the **Error Details** window, then go to the Project to troubleshoot the issue. | ## More Information * [Manage Errors](/ops-center/manage/errors)