Hello,
I have read about the new "Validate" feature of geoprocessing services introduced in ArcGIS Pro 3.6.
What's New in ArcGIS Pro 3.6 – ArcGIS Pro | Documentation
I think this should allow the Experience Builder development team to enable tool validation in the Experience Builder Analysis widget so it can be used like in ArcGIS Pro.
Validate Task | ArcGIS REST APIs | Esri Developer
Using Validation | ArcGIS Pro Documentation
To be honest, I was a bit surprised that this hasn't been implemented yet, as it would really improve the user experience and offer additional benefits by allowing dynamic parameters and data to be included.
Are there plans for upcoming releases?