We are trying to use the Adobe Experience Platform Profile and Segment Membership integration component in an 8.8 system.  We have successfully mapped and pushed many attributes from AEP customer profile to pega.  And we have successfully pushed segment membership data as well.

However, we would like to push fields from AEP such as broadband speed and we know Pega has a field in its customer profile for this attribute.  However when we try to map it in Adobe's source to target configuration screen the attribute is not available as a target field - even though other fields are available.  Is the availability of these attributes a function of the external mapping properties on the xcar class?  Or are the available fields for targeting somehow static and hardcoded into the connector?