ServiceNow Tree Picker中Dot Walking实现及Glide List字段图标问题求助

Hey Brad, I’ve run into this exact issue before when setting up tree picker dot walking in ServiceNow Jakarta, so let’s break down what might be missing in your setup:

1. Double-Check Your Field Type & Dictionary Configuration #

First, make sure you’re working with a Glide List field (not just a Reference field)—the tree picker with dot walking support is specifically designed for Glide List fields. Here’s how to properly set the attribute:

• Navigate to System Definition > Dictionary
• Find your Glide List field’s dictionary entry
• In the Attributes field, add tree_picker=true (if there are existing attributes like ref=sys_user, separate them with a comma: ref=sys_user,tree_picker=true)
• Save the dictionary entry and hard refresh your browser (Ctrl+F5) to load the updated config

2. Verify the Target Table’s Reference Hierarchy #

For dot walking like assigned_to.manager to work, the target table (e.g., sys_user for assigned_to) must have valid reference fields that create a hierarchy. In this case:

• The manager field on sys_user must be a Reference to the sys_user table itself (which it is out of the box, but double-check if you’ve modified it)
• Ensure you have read permissions for all fields in the dot walk path (e.g., the manager field on the user table)

3. Access the Tree Picker Correctly #

Once configured, here’s how to use the dot walking feature:

• On your form, click the magnifying glass icon next to the Glide List field
• In the pop-up window, look for the "Select Field" icon (it looks like a tree/branch or field selector) in the top toolbar
• Click this icon to expand the field hierarchy of the target table, then select the nested field you want (e.g., manager under assigned_to)
• This will auto-generate the dot-walked path like assigned_to.manager and add it to your Glide List

4. Troubleshooting If the Icon Still Doesn’t Show #

If you still don’t see the "Select Field" icon, try these fixes:

• Clear your browser cache completely—ServiceNow can hold onto old UI configurations
• Check if you’re using a custom form view that might be overriding the default Glide List control; switch to the Default view to test
• Confirm your Jakarta instance has the necessary patches applied (some early Jakarta builds had minor tree picker bugs)

内容的提问来源于stack exchange，提问作者Brad