If you just change the field label in SFDC, it will not change in Marketo and this will have no impact on smart lists or smart campaigns using this field.
If you have the bad idea to also change the API name in Salesforce, you are in a bad situation:
Hey Sherry, I know it's been a long time since you asked this question - what was the outcome?
My Sales Ops team wants to change a field name in SFDC and I'm wondering what the impact will be. I do not think the API name will be changed, just the field label.
While this answer is true -- Marketo seems to hold on to the "old Field Label" from Salesforce as the Name of the field in Marketo. Is there a way to fix this?
Yes, the old field label will be kept in Marketo:
If you just change the field label in SFDC, it will not change in Marketo
You can change the label in the admin->lead management, but only if the field is used no where (forms, flow steps, smart lists, ...)
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