We're running up against a problem when we try to update leads in Marketo from an outside api because some of the leads have been automatically merged due to the munchkin and the initial Lead ID is no longer active. The Lead ID we're trying to update is now a Merge ID. This prevents us from updating the lead and is causing errors in reporting, segmentation, etc.
We call into the Lead ID instead of an email address, because in our product platform (the source of the api call) can be used by multiple accounts / usernames with the same email address. Why? Well, because many times a head of household or caretaker will be taking action for multiple family members under the same email address.
Basically, we need an api call where after an error, we supply the merge id and we get back the lead id from Marketo.
We've been given a "sort of" fix that uses a paging token, but it's not a programatic fix and at best would take a huge batch run each evening.
Has anyone run into a similiar issue or know of a way to get the merge ID from Marketo?
I'm having a similar issue. Apparently, the only way to do it right now is to get all lead activity and look for one with "Merged IDs." I submitted an idea for a webhook as a way to interact (since that's what would be most helpful for me), but if that would work for you, you could add your support over here: Webhook for Events on Leads