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Changes in REST API Activity ID with the Spring 2017 release

Question asked by 57ecced9abfbbd5b71d59c6b21167e8ac0ef1eb2 on Mar 24, 2017
Latest reply on Mar 24, 2017 by Dan Stevens.

The uniqueness or presence of the integer “id” field in activities will not be enforced with the rollout of Marketo's next-generation Activity Service beginning in May 2017. An additional string field called “marketoGUID” is being added.  “marketoGUID” will be considered the unique ID for retrieved activities when it becomes available.

Cutover of this change will begin to affect subscriptions with the Spring 2017 release, currently planned to begin May 17th 2017.


If we query for the activities dated on May 15th 2017 on May 18th 2017 will the activities have "id" field or "maeketoGUID" or both?