Email Invalid Infinite Loop - Check/Uncheck
Hello good afternoon,
I am having trouble understanding how a Person update in Marketo causes Salesforce to enter in an infinite loop of sorts via Field Tracking in the related list of Contact History.
For example: My coworker checked the field "Email Invalid" in Marketo for a Person record. It saves. 5 minutes later it gets synced into Salesforce. But it never stops it keeps checking and unchecking.

The Problem: The Marketo Sync User Checks the Email Invalid Field to True. Then it looks at the Email Invalid Cause. Then it Unchecks the Email Invalid Field to False. And the cycle repeats an infinite number of times 5 days a week Monday-Friday ever since May 2022 when I first started working here!

My temporary solution: I don't know why an edit from Marketo into Salesforce creates this infinite loop. But, when I go to the record in Salesforce and then it Syncs into Marketo it works and stops and only updates once. So Marketo to Salesforce creates a loop. Salesforce to Marketo works fine. Does anyone know why this is happening? Right now I manually checked "Email Invalid" in Salesforce and the loop has stopped. But I do feel like this will happen again in the future and wonder if anyone else has experience with this?

Thank you,
George