Datto RMM: The ‘To’ Number Is Not a Valid Phone Number



When you try to disable the Two-Factor One-Time password from the link in the OTP Token login screen, you see the error message, "The To number [phone number] is not a valid phone number."


  • Datto RMM


This occurs when the phone number added in My Info uses the 00xx country code format.

Figure 1: The invalid phone number error (click to enlarge)


Change the phone number format to +xx. For example, the number 00441234567890 should be changed to +441234567890.

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