You have 4 phone partnerships out of the maximum allowed 4 partnerships

You have 4 phone partnerships out of the maximum allowed 4 partnerships. After you reach the maximum, you can’t create additional partnerships until you delete existing ones from your account. To do so, sign in to Outlook Web App, click Options > Phone > Mobile Phones, and delete any unused partnerships.

If you are getting this error, you need to remove a device from your online web app. Most people who email me for assistance are using GoDaddy for their hosted exchange server and all you have to do is follow the instructions above. If you need my help, just let me know. You can call 612-865-4475