The error "can't display the data because PowerBI can't determine the relationship between two or more fields" means that you are trying to use two or more fields from tables that are not related. You need to remove the unrelated fields from the visual and then recreate a relationship between the corresponding fields in multiple tables. Also verfiy the columns connecting two tables are in same data type.
For more advice, please share sample data and show us the relationship you created between those three tables.
Best regards, Yuliana Gu
Community Support Team _ Yuliana Gu If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.