The following fields are currently not supported in a blank subform. 

1. Signature
2. Auto number
3. Formula
4. Section
5. Notes
6. Users
   

The following fields are currently not supported in an existing subform. 

1. Auto number
2. Section
3. Notes

View Type

1. Grid view - Users can add data in the subform rows that will be listed in rows and columns.
   
   
2. List view - The list view is similar to the list report in appearance. When you try adding or updating data in each subform row, a pop-up will be displayed listing out the fields with vertical scrolling. Each popup entry will then be added as a subform row. 
   
   

You can choose the list view for subforms in which you can expect to experience less-frequent modifications, but have a large number of rows. This view also substantially reduces the loading time while editing subform rows.

Example

Vertical scrolling is conventional and intuitive when working with subforms that contain numerous fields, as it ensures better user experience and space management.

Things to Know

1. If you have any hidden fields in your subform, an eye icon will be displayed in their respective columns in each of the subform rows. 
2. If you have any disabled fields in your subform, their respective columns will be greyed out. You cannot edit such field entries.
3. If you've added form fields inside your existing subform in a multi-column layout , then the popup subform will also open with the same layout.
4. In the case of composite fields such as name and address fields, the display fields will be shown as comma-separated values in the subform rows. 
5. You can add subform rows when you expand/collapse your subform.
7. You can edit and delete your subform rows. While editing, the popup subform will appear if you've chosen the List view type.
8. No alerts will be shown when the Edit Row popup is closed, even if an on-user input workflow is triggered.
9. You can add and delete subform rows from popup (list view) subforms, similar to grid view subforms. 
   
11. When deletion of subform row is disabled in field rules, the Delete button will not be visible upon adding a row.
12. When multiple fields are present in a subform field to a point where horizontal scroll is enabled, the first two columns of subform rows are frozen. This keeps essential fields' values as reference points that are visible throughout while you view, add, or edit other field values in a subform row.
    
    
    To enhance readability of the visible fields in the viewport (visible space in UI), this subform freeze is activated based on the condition that the first two columns combined should be equal to or less than:
    1. 30% of the viewport's width for forms that are added as a primary component within an application.
    2. 40% of the viewport's width for embedded forms in a page, and for published forms outside an application.
    When the combined width of the first two columns exceeds the above mentioned limit:
    1. If the first column complies with the limit, the freeze will be activated for only this column.
    2. If the first column exceeds the limit, the subform freeze will not be activated.
       
13. If you've set the field size (width) for the fields added in your subform, the same will be applied to the popup subform as well.

Sorting

Mobile Properties

The sorting option and view type you've chosen for your subform fields in web browsers will automatically be applied to both mobile and tablet devices.

1. Grid view - In mobile, the grid view works like an inline subform, so users can add data in the subform rows in the same screen with the rows being listed one below the other.
   

List view - In mobile, the list view opens the subform in the next screen, where users can add their data. This data will then be added as a subform row.

Related Topics

1. Understand Subform Field
   
2. Enable Subform Field Sorting