Tables won't form a relationship when columns are the same

[jspicer01]

I'm having trouble trying to make a relationship between these tables that isn't many to many. I have tried it with the date and the Cost Centre but both are not working. The table on the left continues down with the different cost centres for each date. The table on the right is smaller as its just a summary of the month and cannot be combined with the table on the left. Do the tables need to have the same column lengths?

The table on the left will be the same date with each region having about 70 values so there are 4,445 rows. Is there something I am missing, I think I have done the formatting correctly aswell so theyre the same 

[v-xiaotang]

Hi @jspicer01 

I just want to confirm if you resolved this issue? If yes, you can accept the answer helpful as the solution or share you method and accept it as solution, thanks for your contribution to improve Power BI.

If you need more help, please let me know.

Best Regards,

Community Support Team _Tang

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

[amitchandak · Accepted solution]

@jspicer01 , You should create a common date and cost table

https://amitchandak.medium.com/power-bi-when-i-asked-you-to-create-common-tables-a-quick-dax-solutio...