Is it somehow possible (e.g. by custom logic) to change the adapt the validation logic for phone numbers? Our issue is that a lot of phone numbers from the original system get lost in the SAP Marketing Cloud because the country prefix does not exist. However, we don't need the "correct" phone number for sending SMS. We only want to use it for content personalization. In this case it would be totally fine if there is no country prefix.
Is there some way to adapt the logic or would the only option be to create some additional custom text field "Phone Unchecked" and use this one for personalization?
Thanks & BR