Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now! Learn more

Reply
Anonymous
Not applicable

How to set Incremental refresh in Power BI with the get data source - folder

Hi there, 

 

Recently i try to use the function - Incremental refresh and i follow the following tutorial step by step.

https://docs.microsoft.com/en-us/power-bi/admin/service-premium-incremental-refresh

 

however, I found a problem and cant solve it. I get data source from my folder and get a huge number of CSV file.

after I open the manage parameters and set the
Type: Date and Time

Suggested values: any value

Current Value: my selected date (eg. 10/10/2020 )

 

the Queries shown that:

Expression.Error: We cannot convert a value of type Binary to type DateTime.
Details:
Value=[Binary]
Type=[Type]

 

and:

Expression.Error: The parameter is expected to be of type Text.Type or Binary.Type.
Details:
29/10/2020 0:00:00

 

how to solve thsi problem or incremental refrsh cant apply to get data source: folder??1.PNG2.PNG

 

 

1 REPLY 1
amitchandak
Super User
Super User

@Anonymous , you are getting wrong values in the column or the transformation is failing. Click on the very first step and check value .

 

refer how to handle error in power query
https://www.youtube.com/watch?v=OE6DPmKqN7s
https://www.youtube.com/watch?v=9-Lag0VOiTs

 

Also refer : debug issue
https://www.youtube.com/watch?v=OE6DPmKqN7s

Share with Power BI Enthusiasts: Full Power BI Video (20 Hours) YouTube
Microsoft Fabric Series 60+ Videos YouTube
Microsoft Fabric Hindi End to End YouTube

Helpful resources

Announcements
Power BI DataViz World Championships

Power BI Dataviz World Championships

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now!

December 2025 Power BI Update Carousel

Power BI Monthly Update - December 2025

Check out the December 2025 Power BI Holiday Recap!

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.