The value of custom phone field on Account Object are not automatically pulled into the Delivery Method picklist selection when creating a Medical Inquiry (similar to the custom email field).
The Phone number field does not work the same as with email because both fax and phone delivery methods use a field type of phone. Therefore, it is not able to determine if a custom field of type phone is relevant for phone or fax delivery method.
The phone or fax numbers, required for picklist selection, should be stored in the fields referenced in the online doc: The --anf and --anp section signals are used to allow users to enter additional values not contained within these fields.
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