Solution
Increase the following SSG Cluster-Wide Property in the destination cluster:
admin.esmRequestSizeLimit
The size limit in bytes for ESM administration and Node Control requests, or 0 for unlimited (Integer). A value less than 0 is invalid (the default value would be used instead).
?
The default is 10485760 bytes; set it to 0 (zero) for unlimited. A change to this property will take about 30 seconds to go into effect across the entire cluster.