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Many-to-Many in Power BI DAX: Choosing Between CROSSFILTER, TREATAS, and Composite Models (With Step-By-Step Diagnostics)

Diagnose and fix many-to-many issues in Power BI DAX—when to use CROSSFILTER, TREATAS, or composite models, and how to avoid hidden ambiguity.

Learn how to map Excel PivotTable row, column, and value fields into Power BI visuals and models, avoiding common filter, subtotal, and DAX pitfalls.