Picklist field cannot be selected as Display field within a Data reference view configuration

[josenavas]

Hi,
Recently, I noticed that Picklist fields cannot be used as Display fields in the Data reference view configuration. In the picture below, as a workaround I used a Frequency type “text” field, but I wonder why I could not select the more straightforward and friendly Frequency type, which is of type “Picklist”.

Is this a current limitation in Constellation? I have tried this approach in older versions of Pega, like Infinity 24 and is the same behavior.

Thanks,

-Jose Navas

[RaviChandra (Ravi Chandra Jonnavithula)]

this is a known limitation in Constellation. picklist properties are not currently supported as “Display fields” in the Data reference view configuration.
In Constellation, the Data reference view is driven by the data model metadata that App Studio generates for Data Types. For display fields, the framework currently only supports simple scalar types (Text, Integer, Decimal, Date, etc.) and does not resolve the display value of a picklist (i.e., the label from the data page) in that context

Why Drop down values not showing when using constellation

Was this field originally created as a text property and then later changed to a pick list in Dev Studio? The Constellation UI is tightly coupled to the underlying data model. If a property is changed directly in the rule form (for example, from text to pick list), and that property was already added to a view as a text input, the rule configuration can become out of sync with the view metadata. As a result, the UI may not render or populate the dropdown correctly—even if the data page itself i…

So, you can use a picklist as the value stored in the Data reference, but when configuring which field to display in the Data reference view, picklist-type properties are filtered out / not shown as options. This is why your workaround, using a parallel “Frequency (text)” field that holds the display label, is the pattern most teams adopt today.