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If a User is inactive, the configuration will break and will need to be re-authenticated by another active userUser.
Example: If the User leaves the company.
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Go to Setup > into the quick find box enter Named Credentials.
Open ClosePlan Metadata Service > click Edit
Disable Start Authentication Flow on Save and Save
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hit Click Edit again and Save
You will be redirected to a login screen > log into your organization
NOTE: Make sure you are logging in with the correct username and password for the particular production or sandbox org you are updating.
The new authenticating User will be displayed here:
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