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Helper III
Helper III

Relationships introduce "ambiguity" - How can I chart values from these different tables.

I'm trying to chart actual versus planned spend on a chart like this:


Planned hours/spend are stored in one table while actual hours/spend are stored in another. Project data is stored in an independent table, and I have a calendar table that I can use (not all dates exist in either planned or actual tables). 

Planned vs Actual troubleshooting.PNG

I've tried joining the Planned and Actual tables to Projects on P_Number and the Planned and Actual tables to Calendar on Date. This seemed to make sense to me in order to show all figures on the same chart in proper chronology. But I get an error when I do so, saying that I'm introducing ambiguity:




Can someone help me figure out the proper relationships so that I can make these tables play nicely and build the chart above?

Community Support
Community Support

Hi @Domenick ,

You can refer the solution in the following links to resolve it:

How to manage ambiguous relationship in Power BI

Bidirectional relationships and ambiguity in DAX

Ambiguity relationship

Best Regards

Community Support Team _ Rena
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Post Patron
Post Patron

One more question where does the information for the line contract in your graph come from? 

Post Patron
Post Patron

So just to confirm I understand you connected Calendar table date to both planned and actual hours date and then you connected projects p_number to both planned and actual p_number. 

One thing to make sure that the calendar table is not connected to the project table and that each relationship is a one way from dimensional table to each the budget and actual. 

That should work 

Super User III
Super User III


Share the link from where i can download your PBI file.

Ashish Mathur

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