How to make a selective Matrix Table

Hiii derekli1700 

1. Check Relationships in the Data Model

• Your Stores table (Tab 1) should have a one-to-many relationship with the Customers table (Tab 2), linking via Store_ID.
• The Customers table should have a one-to-many relationship with the Monthly Breakdown table (Tab 3) via Customer_ID.
• Ensure all these relationships are set correctly and set to Single Direction (or Cross-filtering enabled if necessary).

2. Check Aggregation in Your Measure

• If you are using SUM([Volume]), the data might not be filtering down correctly. Try using:
  DAX

  CopyEdit

  Total Volume = SUMX(VALUES(Customers[Customer_ID]), SUM(MonthlyBreakdown[Volume]))
  This ensures that when you drill down into a store, the sum is dynamically recalculated based on the customers under that store.

3. Verify That Customer Data is Unique Per Store

• If Customer_ID appears under multiple stores in your dataset without a proper Store_ID filter, the volume calculation might not be filtering down correctly.

4. Test Table Filters Using a Simple Table Visual

• Add a simple table visual with Store, Customer, and Volume fields.
• If all customers are still showing the same volume as the store, it confirms that filtering is not working.