Uploaded a map to Field Maps and all the other layers load except one; the following error is given:
Domain: com.esri.arcgis.runtime.error
Code: 21
Description: Invalid JSON
The only thing I can think of that is noticeably different about this layer is that it has a litany of attribute rules tied to it and several field types that not accepted by Field Maps (Date Only).
Any thoughts on how to address Error Code 21?
Thanks for any help,
Nick