Question
Marketo & Salesforce Sync: Flow trigger error

Dear Marketo Nation
Help!
We have several campaigns at the moment in which some, not all, leads are not syncing to Salesforce.
When we jump into a lead to see what the issue is, we see this error (apologies, in German).
Has anyone experienced this? Is there a way to fix this?
Thank you!
@Maurice Tubeé