A Marketo sandbox is an additional instance used for testing purposes before implementation in the production environment.
Not everyone has purchased this feature. Please contact the Adobe Account Team (your Account Manager) for details.
A Marketo sandbox cannot be synced to your regular CRM if it’s already synced to your production instance. Use your CRM’s sandbox for the sync, and follow all the same steps as the original sync.
We do not currently support sandbox refresh for Marketo Dynamics Sync. If you need to refresh your Dynamics CRM sandbox, a new Marketo sandbox will be required. Please contact your the Adobe Account Team (your Account Manager) for additional details.
You can submit a Support case requesting a one-time instance copy to fill your sandbox. The instance copy will not bring over everything, however. Please consult Marketo Support for details.
If you’re changing your native CRM, a new Marketo instance would be needed, and an instance copy to the new Marketo instance would not be possible. Instead, please work with Marketo Support to explore the Import Program functionality.