How to get display value of reference field in ServiceNow?

Getting the display value of reference field in ServiceNow can be a common requirement for many developers and administrators. Reference fields in ServiceNow often store the sys_id of a record, rather than the actual display value. So, how can you retrieve the display value of a reference field in ServiceNow? The answer lies in using GlideRecord and a few lines of code.

To get the display value of a reference field in ServiceNow, follow these steps:

1. Create a new GlideRecord object for the table containing the reference field.
2. Query the table using the sys_id of the reference field to retrieve the record.
3. Use the `getDisplayValue()` method on the GlideRecord object to extract the display value of the reference field.

Here’s a sample code snippet to demonstrate how to get the display value of a reference field in ServiceNow:

“`javascript
var incidentGr = new GlideRecord(‘incident’);
incidentGr.get(‘sys_id’, ‘1234567890abcdef1234567890abcdef’);

gs.print(incidentGr.getValue(‘caller_id’).getDisplayValue());
“`

In this example, we first create a new GlideRecord object for the incident table. Then, we query for an incident record with the specified sys_id. Finally, we use the `getDisplayValue()` method on the `caller_id` reference field to retrieve and print out the display value.

By following these simple steps and using GlideRecord in ServiceNow, you can easily obtain the display value of any reference field in your ServiceNow instance.

FAQs:

1. How do I access the display value of a reference field in ServiceNow?

You can access the display value of a reference field in ServiceNow by using the `getDisplayValue()` method on a GlideRecord object.

2. Can I retrieve the display value of a reference field using a REST API call?

Yes, you can retrieve the display value of a reference field using the REST API by querying for the record and specifying the fields to include in the response.

3. Is it possible to get the display value of a reference field without using GlideRecord?

No, GlideRecord is the recommended way to interact with records in ServiceNow, including accessing the display value of reference fields.

4. How can I display the display value of a reference field in a UI page in ServiceNow?

You can use client-side scripting and GlideRecord to retrieve and display the display value of a reference field in a UI page in ServiceNow.

5. Are there any limitations to getting the display value of a reference field in ServiceNow?

There are no specific limitations to getting the display value of a reference field in ServiceNow, as long as you have the necessary permissions and access to the record.

6. Can I retrieve the display value of a reference field in a business rule?

Yes, you can use GlideRecord and the `getDisplayValue()` method in a business rule to retrieve the display value of a reference field.

7. What happens if the reference field is empty or the record does not exist?

If the reference field is empty or the record does not exist, attempting to retrieve the display value may result in an empty value or an error message.

8. Is there a difference between using `getDisplayValue()` and `getValue()` for reference fields?

Yes, `getValue()` returns the sys_id of the reference field, while `getDisplayValue()` returns the display value of the referenced record.

9. Can I customize the display value of a reference field in ServiceNow?

You can customize the display value of a reference field by configuring the reference field to display specific fields or adding client scripts to manipulate the display value.

10. How can I troubleshoot issues with getting the display value of a reference field in ServiceNow?

You can troubleshoot issues by checking your GlideRecord query, verifying permissions, and reviewing any error messages in the logs or console.

11. Are there any performance considerations when retrieving the display value of reference fields in ServiceNow?

While using GlideRecord is efficient, ensure that your queries are optimized and that you are not making unnecessary calls to retrieve display values for improved performance.

12. Can I use UI policies or UI actions to display the display value of a reference field?

Yes, you can use UI policies or UI actions to enhance the user experience by displaying the display value of a reference field in forms or lists in ServiceNow.

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