Duplicate SMS notifications for single incident

With an on-call schedule with one person scheduled at all times, a single incident sends two SMS messages to the on-call person. One comes from 43105 and another from 73889.

When an incident is ACK’d or resolved, both of those numbers send updates to the on-call person.

Incident timeline shows a single notification sent to the on-call person but they receive two messages.

What can I change to have a single SMS sent instead of duplicates?

Hi Matthew,

Thank you for reaching out to PagerDuty Support!

I am sorry that you are experiencing this duplicate SMS issue, and will be glad to assist. Can you please reach out to us at support@pagerduty.com, so that we can further investigate this and troubleshoot?

We will be looking forward to hearing from you.

Cheers,
Amanda Watkins
Technical Support Specialist
support@pagerduty.com