Get Layer information for Feature Service Tables (Non-Spatial)

Looking for some help getting layer information (field names, domain values, template values, etc) from a REST service feature table.

In my ArcGIS On-Line web map, I've added the two spatial layers plus the feature table I'm hoping to use. In the work flow that my mobile project is calling, I can call and return the configuration I need from the two feature layers but the 'Get Layer Activity' configured to try and pull back from the table keeps returning <NULL>.

Any ideas or work around's for this would be appreciated, this problem doesn't appear to exist when interacting with the HTML5 Viewer in a workflow as i have interacted with those plenty of times.