n8n - 💡(How to fix) Fix LinkedIn node sends deprecated LinkedIn-Version 20250401 → 426 NONEXISTENT_VERSION [2 comments, 3 participants]

Error returned by LinkedIn:

TL;DR

Update the hardcoded LinkedIn-Version header in GenericFunctions.ts to a currently supported version, such as 202508 or later, to resolve the HTTP 426 error.

Guidance

• Identify the current supported LinkedIn API versions and update the hardcoded 20250401 value in packages/nodes-base/nodes/LinkedIn/GenericFunctions.ts to the latest version.
• Consider making the LinkedIn-Version header configurable or auto-incrementing to prevent future breakages when LinkedIn retires old versions.
• Verify the fix by executing the LinkedIn node with a valid text payload and checking for a successful response.
• Review LinkedIn's API documentation to ensure compliance with their versioning policy and to stay up-to-date with the latest supported versions.

Example

// packages/nodes-base/nodes/LinkedIn/GenericFunctions.ts
// Update the hardcoded version to a currently supported version
const linkedInVersion = '202508'; // or later

Notes

The provided solution assumes that updating the hardcoded version will resolve the issue. However, it is recommended to consult LinkedIn's API documentation to ensure compliance with their versioning policy and to stay up-to-date with the latest supported versions.

Recommendation

Apply workaround: Update the hardcoded LinkedIn-Version header to a currently supported version, as this will resolve the immediate issue and allow the LinkedIn node to function correctly. A more permanent solution would involve making the version configurable or auto-incrementing, but this may require additional development and testing.