Configure ClosePlan Environment - Named Credentials

Go to Setup > Named Credentials here

Click the Down Arrow next to the New button and select New Legacy
For Label enter ClosePlan Metadata Service Copy
For Name enter ClosePlanMetadataService Copy
(NOTE: Salesforce will autofill this value, you must replace it! Use this value exactly, no spaces, no underscores)
URL: https://YOURDOMAIN.my.salesforce.com Copy
(NOTE: Replace YOURDOMAIN with your domain name. Your domain name can be found here)
For Identity Type select Named Principal
For Authentication Protocol select OAuth 2.0
For Authentication Provider enter ClosePlan Metadata Auth ProviderCopy
For Scope enter full refresh_token offline_access Copy
Enable Start Authentication Flow on Save
Enable Generate Authorization Header
Enable Allow Merge Fields in HTTP Body
Click Save and you will be redirected to the Salesforce Authorization dialog where you will
log in to your Salesforce Instance.
In the pop up window, click Allow

Continue to Step 11 after you review the notes below

Important Notes:

You may see an error message if the configuration is still being processed by Salesforce.
It will look something like this:
error=redirect_uri_mismatch&error_description=redirect_uri%20must%20match%20configuration
Don't worry, this can happen if Salesforce is still processing the information.
Follow the steps below:

You may move on to Step 11 now (You can confirm Named Credentials later in Step 15)
OR:
You may wait 10 minutes then go back to Named Credentials (Quick Find box > Named Credentials)
- Click ‘Edit’ next to ‘Named Credentials’
- Click ‘Save’ until you get to the Salesforce Authorization dialog to log in
- In the pop up window, click Allow

If auth. dialog does not appear within 60 minutes, it is possible that the callback url may be invalid/improperly entered. Return to Step 8 and confirm the information is correct in this step.

When you are able to successfully log in, Named Credentials have been successfully propagated.