Salesforce Voice - Cannot Delete VoiceCall Record

To delete the VoiceCall record in Salesforce Voice, you must first delete the associated EngagementAttendee record. Follow the steps below.
Steps to Delete a VoiceCall Record with a Linked EngagementAttendee

1. Copy the Engagement Attendee ID (for example, EA-xxxxxxxx) displayed in the error message.
2. Click the App Launcher (9 dots icon) in the top-left corner.
3. In the search bar, enter "Engagement Attendees" and select the item from the results.
4. From the list view, find and click the record matching the ID copied in step 1.
5. Click the Delete action on the record page to delete the EngagementAttendee record.
6. Return to the original VoiceCall record (for example, VC-xxxxxxxx).
7. Click Delete again and confirm. The VoiceCall record is now deleted successfully.

Important: Before deleting records in your production environment, always verify the potential impact on your business operations by testing in a Sandbox or similar test environment first.