Two upcoming deprecations may impact your integration with Marketo Engage and may require action.
The Marketo Engage SOAP API will be fully deprecated on October 31st 2025. You are receiving this notification because one or more of your Marketo subscriptions has used the SOAP API in the past thirty days. To avoid disruptions of service, you will need to retire or migrate any services using the SOAP API to the Marketo Engage REST API by October 31st, 2025. Consult the Migration Guide for further information.
On June 30th 2025, the Marketo Engage REST API will no longer accept access tokens for authentication and authorization via the ‘access_token’ query parameter. You are receiving this notification because one or more of your integrations uses this parameter to authenticate. To avoid disruptions of service, any services using this parameter to authenticate will need to migrate to using header-based authentication using the ‘Authorization’ header, which is documented here.
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