Hello,
I am testing out the Esri ArcGIS Feature Service writer that is in the Esri ArcGIS Online Connector package (Esri ArcGIS Connector v3.13.2). I’m using Form 2024.2.2.0 (20250114 - Build 24820 - WIN64). Screenshots are edited to remove confidential information.
I have noticed that the “Target WKID” cannot be left blank even if you have selected “Feature Service Handling: Use Existing”

If I am understanding the documentation correctly, this parameter is only needed if the writer is creating a Feature Service. However, as the default is set to WKID 102100, if you don’t change this to the correct WKID, it will write the data out to the wrong location. I initially made this mistake before I realized I had to input my data’s WKID.

For the old Esri ArcGIS Portal Feature Service Writer, you were able to leave this parameter blank:

I think this parameter being a required parameter is unnecessary when Feature Service Handling is set to “Use Existing” and I like the way it was in the older writer. But I am wondering if I am overlooking some reason for it being required now?
