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New Member

Table relationship - option greyed


I am new to the community and quite new to PowerBI so my question is pretty basic!

I am trying to create a one-to-many relation between two tables but this option is greyed. Can someone guides me in telling me what I am doing wrong?

Thank you very much in advance,




New Member


Thank you both for your replies. It appeared the option was greyed as I had a duplicate hiding in my UNIQUE "Locations" table.

That said, the relationships between my 4 tables still do not seem to work properly, as I cannot use the function Related - as I would like.

I would like to use the function Related to convert my volumes, which are in local currencies, into euros. Currency values depend on countries and on dates.


Could you provide a tip to help?


I am grateful lbrissy_0-1670937279090.png



Community Support
Community Support


Make this relationship active

When checked, the relationship serves as the active, default relationship. In cases where there is more than one relationship between two tables, the active relationship provides a way for Power BI Desktop to automatically create visualizations that include both tables.


There can be only one active relationship and many inactive relationship between two tables.

Create and manage relationships in Power BI Desktop - Power BI | Microsoft Learn


Best Regards
Community Support Team _ Polly

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.


Super User
Super User

it happens when another thread of relation exist already indirectly via another table in between. 

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