I'm curious if any of you have ever seen this error before. It happens when trying to sync the a lead (where there’s a parent contact) over to CRM. As part of a webhook (that creates a temporary duplicate lead in Marketo from a lead is already a MS contact – and before the sync – I’m populating the “Parent Contact for Lead” field (parentcontactid) with the ContactGUID from the source contact record:
But then when the lead is synced to CRM, I get this error:
When I remove the value from the "Parent Contact for Lead" field, it syncs fine. Any idea what could be causing this?