Calculated Expressions Does not support Feature sets and Cannot Create Geometry

[JeraldAllen]

Hello All, I am wondering how I can go about populating fields on a line from a point that is connected to it using AGOL maps. I have created forms in Maps Classic that appear to have worked but the new maps it does not. 

I receive this error when trying to create the expression. 

Execution Error:Cannot create Geometry in this SpatialReference. Engine is using a different spatial reference.

I shared the layers via ArcGIS pro Share/Publish Web Layer.  Help??