I am new to salesƒroce integration. I am trying to connect my custom/delivered objects from Service cloud to Marketing cloud using Marketing cloud connect. I have successfully downloaded and configured from below link.
Now, I am trying to synchronize my custom/delivered object in marketing cloud but it is not allowing me to do so.
I am getting this message and I am not sure how and where to do this step.
Please let me know if anyone has any idea.
I really appreciate your time and reply.
The message in your screenshot is descriptive of the issue. You have to first synchronize the objects listed before you can synchronize your custom object. This would be based on the existing data relationships you've established between the objects in Salesforce. You may find that after synchronizing just a portion of the objects listed the object becomes available (in particular the 'User' object seems to enable most), so keep an eye on that to see if it becomes available.
If you're having trouble finding those prerequisite objects, use the search bar (seen in the screenshot you provided) and search for the object names. You should see each one since those are standard objects.