Question:

Why Account Territory assignments, which have a blank Country value, are not pushed to Veeva CRM?

Answer:

The Veeva CRM Org Countries section, located in the active Veeva CRM Org record detail of the Integrations/Align Integrations tab, is populated with active Country values.

In case the Country field of the Territory or the Country field of the Account record are not filled in with an active Country value present in this section, then the Push to CRM Process ignores the Account Territory assignments.

Related Documentation:

Align Help Documentation: Align-CRM Integration