Step: Enable eMessage in Campaign for the new partition
To allow users of the new partition to access eMessage features in Campaign you must enable eMessage in the Campaign partition that corresponds to the new partition. For example, the eMessage mailing tab does not appear in the Campaign interface until you enable eMessage in the Campaign configuration.
You enable eMessage in the partition by updating the eMessageInstalled configuration property for the corresponding Campaign partition.
In the Marketing Platform configurations, navigate to Campaign | partitions | partition[n] | server | internal and set the eMessageInstalled property to yes.