Source Campaign field is not updating in Dynamics from Marketo

[#1]

Issue

The Source Campaign field in Microsoft Dynamics is not getting updated when the field is updated in Marketo.

The sync from Microsoft Dynamics to Marketo will be working fine.

Environment

Native integration with Microsoft Dynamics
Campaign Sync not Enabled

Solution

To sync Campaign Source from Marketo to Dynamics, the option 'Campaign Sync' needs to be enabled as per this documentation: Enable Campaign Sync | Adobe Marketo

Root Cause

If the Campaign Sync is not enabled we will not be syncing over the value of the field to Microsoft Dynamics as it is part of the Campaign Sync.