Calculating Area FieldMaps Unable to Calculate

[KaraONeill]

I have been reading and Googling, and still unable to figure out a solution or more than likely what I am doing wrong. I would like to use Field Maps Designer to create a map for collection.

I have a hosted nearmap tiled layer that I am using as a basemap which seems to open fine when adding it as a basemap. I am using a state plane projection for that layer that is identical to the feature layers that I have published as well. Theoretically, they are in the same system and not using Web Mercator. I open both up in field maps designer and want to create a form. Under the Calculated Expression , I utilized the most common code for calculating the area that I could find.  I will also be using using a 3rd party GPS receiver too and realize a map profile may be needed.

Skip to 5 

What did work was adding this layer to a web mercator map and using the code. What also worked was just utilizing Area instead of AreaGeodetic, but the accuracy is off.  My end goal is to have these field calculated when the user hits submit so I don't need to do it on the backend. There are automatic reports going to be generated and I would rather not have to do any extra geoprocessing steps. 

So what I am missing, doing wrong here?

Thanks in advance!

[DanGruber]

In the past, when I checked polygon areas on my map using the measurement
tool in Map Viewer and compared that with what's shown in the attribute
table, I noticed that the difference was some constant factor, i.e., the
actual area in some units = the area in the attribute table in those units *
K (where K is a constant). So I could just use the Calculate function on the
attribute table to get the correct areas.

This may not be the case today but it's worth checking.

Dan

[ChrisDunn1]

Hi Kara,

In Field Maps, if you go to your user profile and then select Troubleshooting -> View Logs, does it report any arcade errors? That might help narrow down what's going on.

Chris