MDS 2016 is a big improvement over the previous versions. There are many enhancements in almost every area. One change I had not noticed in MDS 2016 is that a default value has been added for the “ErrorCode” attribute in the staging tables.
One situation where this may be an issue is when SSIS is used to stage data. If the “Keep nulls” value is checked in the Destination configuration, the insert will result in an error.