Hi Nicolette,
What specific items are you trying to invoice them for within the exhibitor portal? Their leadcapture licenses? That is what they can purchase directly in the portal but if they are registering for the event starting out in the portal, that still directs them to the event in Cvent and any purchases made would exist in the registration event and not the exhibitor portal.
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Julia Plymack
Senior Customer Success Manager
Cvent
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