Salesforce Field Service Visual Remote Assistant (VRA): SMS/Email Session Pop-Up Fails to Open and "Send an Invitation" Button Stays in Loading State — API Enabled Permission Required

In Salesforce Field Service, the Visual Remote Assistant (VRA) feature allows support agents to start a live video or photo-sharing session with a customer via SMS or email invitation. VRA is a Salesforce Field Service capability that enables remote visual collaboration without requiring the customer to install an app.
During SMS and email VRA sessions, the following symptoms may occur:

• After the customer opens the meeting link from the Field Service invite, the VRA pop-up fails to open in Salesforce.
• The "Send an invitation" button remains in a loading state and does not complete the action.
• On the customer side, they see a persistent "Connect with Agent" screen with no connection established.

VRA uses the Salesforce API (Application Programming Interface — the mechanism that allows Salesforce to create and update records programmatically) to create internal Salesforce objects and new records, such as session invite records. Users who do not have the API Enabled permission in their profile or permission set cannot perform these operations, causing the session creation to fail silently.
Important: The API Enabled permission can only be added to custom profiles. If the organization uses only standard profiles, API access must be granted through a permission set or by cloning the standard profile and adding the permission to the cloned version.