When onboarding a contact, users may receive the following error (Figure 1):
Figure 1 Error Message
This error is shown when the contact number you are trying to add is not registered on WhatsApp. To resolve this, ask the contact to verify the number used to register on WhatsApp and then onboard the contact using the verified registered number.
If the contact number is verified as registered on WhatsApp and you are still receiving the error, please contact Symphony Support at firstname.lastname@example.org