Reset Required Fields for ArcGIS Server Feature Services

Answer

As an administrator, it may be necessary to ensure values are entered by field users in a specific field. Within the geodatabase information model, you can define a field as non-nullable and a value must be supplied for that attribute before it can be submitted. In Collector for ArcGIS, this may not be enforced when creating a new feature. See the Collector for ArcGIS blog: Require the information you need from the field

Esri has provided a workaround for Hosted Feature services on Github, however this is not applicable for ArcGIS Server services.  For ArcGIS Server services, it is necessary to add a property to the Feature Service via the Server Admin directory at REST, as follows. 

1. Go into the server’s admin REST page – for example: 

https://myserver.esri.com:6443/arcgis/admin/login

2. Log in as the admin.
3. Go to the services page, for example:

 https://relic.esri.com:6443/arcgis/admin/services

4. Click the service that they are using, for example:

 https://relic.esri.com:6443/arcgis/admin/services/emptygeom.MapServer

5. Scroll to the bottom of the page and click Edit.
6. Go to the feature service section and at the bottom add the following:

"setDefaultsToNullForNotNullFieldsInTemplates":"true"

7. Click Save.
8. Reset the service.