Version(s) affected: DataSight 3.2 and above

Issue:  Projection information has been added to SQL Views in Version 3.2. As a result, the Projection information column has been made mandatory and unique when adding a projection row to level 3 properties. When you don't record any entry in the Projection Information a Can't be Empty marker Can_t_Be_Empty_Button..png will appear, and you will not be able to save your Projection.

Resolution: 

Enter the Projection Information and Save.