PRACTICE MATERIAL BELOW!👇 Function: Would you like to rename multiple columns in a single operation? This custom step allows you to rename as many columns as needed. You need one mapping table (let's call it "RenameTbl") with columns: OldName and NewName, and then reference it simply with a Custom Column step. Yellow markings indicate the difference between Old and New Columns after the custom step. Custom Column in applied steps Power Query code that you will use in the Cus