Wells Fargo Gateway is performing maintenance for the OAuth 2 API for the sandbox environment on Monday August 10 from 2:00 PM ET - 6:00 PM ET.
OAuth 2: Any API keys (bearer tokens) generated during this maintenance window may not work as expected and return a 401 error. Any API keys created before or after this maintenance window will work normally as long as they are still within 24 hours of when they were first generated.
My Apps: Please avoid creating new Apps or updating existing Apps during this maintenance window.