Get certified for free when you join Fabric Data Days 2026 and dive into Fabric, Power BI, SQL, AI, and other essential data skills.
Join nowData Days is here! Join us now for 60+ days of learning, challenges, and connection. Learn more
Hi.
I am new to PowerBI and facing problem in my refresh data. I am using Odata feed as s source. I published my data and added all security keys etc . Data refresh on daily basis for my dashboard was working perfectly more than a week but today it doesnot refreshed I got this error. I didnot modify my data source then why this error. Trying to resolve but didnot understand . If someone can help me .Really big Thanks .
Solved! Go to Solution.
Hi @SaKhan ,
It looks like you’re encountering an error related to a duplicate value in the ‘EffortVariance’ column of your ‘Plan_Project’ table. This issue can occur if a column that is part of a many-to-one relationship or a primary key contains duplicate values.
Ensure that the ‘EffortVariance’ column does not contain duplicate values in your Plan_Project table.
Hi @SaKhan ,
Did @Bibiano_Geraldo reply solve your problem? If so, please mark it as the correct solution, and point out if the problem persists.
Best regards,
Adamk Kong
Hi @SaKhan ,
Did @Bibiano_Geraldo reply solve your problem? If so, please mark it as the correct solution, and point out if the problem persists.
Best regards,
Adamk Kong
Hi @SaKhan ,
It looks like you’re encountering an error related to a duplicate value in the ‘EffortVariance’ column of your ‘Plan_Project’ table. This issue can occur if a column that is part of a many-to-one relationship or a primary key contains duplicate values.
Ensure that the ‘EffortVariance’ column does not contain duplicate values in your Plan_Project table.
in your data model, you have table called "Plan_project" and has an one to many realtionship with other table on column "Effort Variance".
as per data model, you can not have duplicated value in column , if it has been used in one to many raltionship. so please update the relationship to many to many or remove duplicated from data
Remove duplicates from excel sheet
That would work 🙂
Don't miss out on Data Days, June 15 through August 7. Learn Fabric, Power BI, SQL, AI and more.
Check out the May 2026 Power BI update to learn about new features.
| User | Count |
|---|---|
| 23 | |
| 23 | |
| 21 | |
| 20 | |
| 15 |
| User | Count |
|---|---|
| 58 | |
| 54 | |
| 42 | |
| 30 | |
| 24 |