how to show value in a custom entity field based on another custom entity list field

AI generated answer (using internal Slack threads):

To show a value in a custom entity field based on another custom entity list field, you can use the Sourcing and Filtering feature in NetSuite. This feature allows you to create dependent dropdown lists where the values in one list are dependent on the selection in another list. Here are the steps to set this up: 1. Create your custom fields. One will be the source field (e.g., State/County) and the other will be the dependent field (e.g., Town/City). 2. In the dependent field settings, go to the Sourcing & Filtering subtab. 3. In the Sourcing section, select the source field from the 'Source List' dropdown. 4. In the Filtering section, select the source field from the 'Filter By' dropdown. 5. Save your changes. Now, when a value is selected in the source field, the dependent field will only show the values related to the selected source value. Here are some important points to note: - The source field must be a List/Record field type. - The dependent field must be a List/Record field type and its source list must have a relationship with the source field's list. - This setup works best when the source and dependent fields are on the same record. If you want to have a list in the line item section based on a body field, you might need to use SuiteScript to achieve this. For more information, you can refer to the NetSuite Help Center articles on [Dependent Dropdown Lists](https://tstdrv1776198.app.netsuite.com/app/help/helpcenter.nl?fid=section_N2840468.html), [Sourcing](https://system.netsuite.com/app/help/helpcenter.nl?fid=section_N2839623.html), and [Filtering](https://system.netsuite.com/app/help/helpcenter.nl?fid=section_N2840153.html). ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******