MCP issues
Common Model Context Protocol (MCP) authentication and connection issues with their causes and resolutions.
- Error message
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When this error occurs, the system displays the following message:
401 Authentication Error
- Cause
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The Personal access token (PAT) or access token is likely expired.
- Resolution
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If the PAT is expired, log in to the Engineering AI Hub console and generate a new PAT. If the access token is expired, follow the prompts from the MCP Client or log in to the console and refresh the token from the user interface.
MCP Clients such as IBM Bob or Copilot provide details about the authentication error.
- Error message
-
When this error occurs, the system displays the following message:
Project not found
- Cause
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Invalid project ID or name.
- Resolution
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Use list_modeling_projects to find valid IDs.
- Error message
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When this error occurs, the system displays the following message:
Branch not found
- Cause
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Invalid branch ID or name.
- Resolution
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Use list_branches to find valid IDs.
- Error message
-
When this error occurs, the system displays the following message:
Element not found
- Cause
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Invalid element ID or name.
- Resolution
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Use search tools to find element.
- Error message
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When this error occurs, the system displays the following message:
Pagination error
- Cause
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Invalid page or limit.
- Resolution
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Check parameter ranges.