Known issue - Incorrect column names after column format or aggregation change
You might experience incorrect or random column names after changing the column format or aggregation.
Status: Open
Product Experience: Power BI
Symptoms
You might experience incorrect or random column names after changing the column format or aggregation. One example where the incorrect or random column names could appear is when querying through SQL Server Management Studio (SSMS).
Solutions and workarounds
You can try to run an XML for Analysis (XMLA) command through SSMS to the XMLA endpoint to clear the cache to address the incorrect column names issue. However, you might encounter the same issue if you redo the same operation to change column format or aggregation.