Conceptual

Power BI Field Parameters in Direct Lake Mode using XMLA Endpoint Scripts

In Direct Lake mode within semantic modeling domains, field parameterization is governed by a state-locking mechanism where any modification to a model via XMLA Endpoint scripts invalidates the standard in-browser metadata editing capabilities. The core principle relies on the execution of specific schema generation rules—typically encapsulated in C# scriptlets—that programmatically define dynamic table objects and enforce necessary column properties, effectively bypassing manual configuration constraints while enabling interactive dimension substitution during report visualization. This mechanism represents a hybrid architecture integrating external data lakehouse storage with internal semantic logic through executable metadata scripts rather than static definition files.