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Marketo REST API returns empty result[]

Question asked by Franky Ruysschaert on Sep 27, 2019
Latest reply on Sep 27, 2019 by Sanford Whiteman

When a lead first visits a page on a domain, a new anonymous lead record is created in Marketo. The ID of the this record is based on the Munchkin cookie (ex. id:561–HYG–937&token:_mch–marketo.com–1374552656411–90718).

 

When certain conditions are met the anonymous lead is associated with a know lead and the user will have a queryable marketo ID (ex. 42065).

 

However, there are situations where the lead has a marketo ID (because he clicked the link in the email) and an api request to (rest/v1/lead/42065) returns an empty result [] array.

 

ex: https://xxx-GGO-xxx.mktorest.com/rest/v1/lead/42065.json?access_token=e5b8e439-xxxx-4d62-xxxx-f1308cxxxxx:lon

 

Why is that?

 

Resources used:

Anonymous Lead Promotion to Known Lead – Munchkin V2 Behavior
https://developers.marketo.com/javascript-api/lead-tracking/

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