
Add or reset verification phone numbers in Apple Business Manager
All Apple Business Manager roles require a six-digit verification code along with their Managed Apple ID password. This verification code, which is sent to a phone number associated with the user account, enhances the security of Apple Business Manager.
New verification codes are required every 30 days.
When to add a verification phone number
For users having either an Administrator role or a Manager role (for example, Content Manager), you may want to add more than one verification phone number.
Note: Each phone number receives a code that must be entered to verify that specific number. Have all the phones nearby so the codes can be entered.
When to reset a verification phone number
If the user changes phone numbers, you should reset the user account to ask for a new phone number. Accounts that have identical privileges or lesser privileges can be reset only by you.
Add a verification phone number
- Go to the Apple ID website and sign in with your Managed Apple ID. 
- Tap Security. 
- Tap “Add a trusted phone number,” enter the phone number, select Text Message or Phone Call, then tap Continue. 
- Enter the six-digit code, then tap Verify. 
Reset a verification phone number
- In Apple Business Manager  , sign in with a user that has the role of Administrator or People Manager. , sign in with a user that has the role of Administrator or People Manager.
- Tap Users  in the sidebar, then search for a user in the search field. See How to search. in the sidebar, then search for a user in the search field. See How to search.
- Select the user from the list. 
- Tap  , then tap Reset. , then tap Reset.- When the user signs in again, they’re prompted to add a new phone number.