Hi @darko ,
Thank you for suggesting the possible cause of the issue. However, I am running into a different issue now which is, that I am trying to check both systems by deleting a test lead from Marketo only. Before deleting, I am making sure the custom field "Sync to Marketo" becomes false. Post that, I waited for half an hour to make sure the sync happens between the two system. However, I cannot see the field getting an update in SFDC. How I can make sure if I am updating field from Marketo, it gets updated in SFDC.
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Thank you for your great insights and help on this topic. I have recently joined a team where the first task for me was to look into a situation where the team is experiencing a great spike in MQL numbers in batches at a similar time. Basis my investigation, I found the leads were recently created in Marketo with the source of Salesforce.com but these leads have an old lead history in SFDC. This situation implies that these leads were deleted from Marketo only and not from SFDC. However, I am not sure that my team followed the process correctly to delete the leads in Marketo only but I want to know why these leads are getting created now suddenly and from SFDC, we cannot see a major change in their respective activities. Can you please help me in this case and let me know what might be the issue of these leads syncing back suddenly?
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