Unable to create features in ArcGIS Online Map Viewer due to form error

Description

When attempting to create a feature in ArcGIS Online Map Viewer using a form, the operation cannot be completed and the following warning message is displayed in the Editor pane:

Warning:   
Features cannot be created. There is an issue with the form.

As a result, new features cannot be added through the form, resulting in incomplete data and preventing data updates.

Cause

The field used in the form is removed from the feature layer, causing the form to retain the outdated field configuration and not reflect the updated schema.

Solution or Workaround

Remove the deleted field from the form in ArcGIS Online

1. Open the web map in Map Viewer.
2. On the Contents (dark) toolbar, click Layers and select the layer containing the deleted field. In this example, 'Zpoint' is selected.
3. On the Settings (light) toolbar, click Configure editing > Forms.
4. In the Configure form window, locate the deleted field and click Delete. In this example, 'Name' is deleted.

5. Click Save.
6. Save the web map.

The warning message is no longer displayed, and features can be created in Map Viewer as shown below.