Required fields are not honored when adding a new feature in Map Viewer and ArcGIS Field Maps in a feature layer published from ArcMap because ArcMap assigns default values for the fields in the feature template.

Additional Information

Workaround

1. Log in to ArcGIS Online with administrator credentials.
2. Navigate to the intended feature service and open the feature service.
3. On the right side of the feature service details page, in the URL section, click View.
4. In the ArcGIS REST Services Directory window, click Admin on the top right of the page.
5. Under Layers, select the desired feature layer.
6. Scroll to the bottom of the page, and click Update Definition.
7. Change the value of the 'lastEditDate' key to null.
8. Search for the 'Templates' parameter (Press Ctrl+F and search for Templates).
9. For each template that is not nullable,

• Change " " to null
• Change 0 to null

10. Click Update Layer Definition.

Steps to Reproduce