Sorry @lapriverside​ I'm not sure I understand your question. Could you elaborate more and explain what you are trying to do? Maybe send some screenshots of your workspace and data.

It looks like you're getting an Esri compatibility error, you may have to specify the Esri compatibility within your workspace instead of setting it to "Automatic" if you have multiple versions of ArcGIS/ArcMap installed on the same machine. For more resources on Esri compatibility see these resources:

• Setting the Esri ArcGIS Compatibility Workspace Parameter
• Notes on FME and Esri Versions and Compatibility

If this is a serious issue for you I would suggest creating a case with support. Hope this helps.

Thank You Evie,

That was the issue. I was wondering, when you have a very large set of fields to map, automatic, reads the input to the output value?