Datum Transformation Issue

Question

Hi Esri Community

I have an issue with a Datum Transformation. A datum transformation can not be found in Australian GDA94 to GDA2020.
I downloaded and installed "ArcGIS Coordinate Systems Data" from My Esri and restart the computer, but the issue persists. In the dropdown list appear "None". Could you please help me with how to fix it?

danretired · Accepted Answer

I suspect related to your concern

GDA2020 & WGS84 (Web GIS) - Esri Community

JayantaPoddar · Accepted Answer

Australian GDA94: Is this a Geographic Coordinate System?

Then, you need to use Define Projection to the layers with Australian GDA94 Coordinate System. Define their coordinate system as Geocentric Datum of Australia 1994.

Once this is done, you should see the appropriate transformation method(s).