Failed to issue Conference instruction due to missing ‘conference_sid’

The conference instruction issued as a result of the transfer can only be issued on a task which has a conference_sid in its attributes.

• The Conference instruction was issued on the wrong Task.
• The Task attributes were modified and no longer contain the conference_sid property.

• Confirm the Conference instruction is issued on the correct voice Task.
• Ensure that the conference_sid is present in the Task's attributes.