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
Same here
I'm encountering the same issue with a feature layer and views off that particular layer.
I had the same problem today, Error 21. I removed the DateOnly field and created a new field with the formate Date. This fixed my problem.
I also had a warning when creating my form that there was a field that wasnt supported in FieldMaps (DateOnly field).
Hope this helps
Good answer which helped me, thanks a lot. Also seem that TimeOnly is not supported
Technical support document from the error you are getting: Error: ArcGIS Field Maps Domain: com.esri.arcgis.runtime.error Code 21. Invalid JSON
Also, I found documentation on what field types are not supported in some clients: 24170: <value> contains a field type that may not be fully supported in some clients—ArcGIS Pro | Do...
I hope this is helpful!