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

The ultimate Microsoft Fabric, Power BI, Azure AI & SQL learning event! Join us in Las Vegas from March 26-28, 2024. Use code MSCUST for a $100 discount. Register Now


Power BI Data Mart Hidden Error

I'm trying to bring in a collection of csv files from a sharepoint folder into a power bi data mart. I've used the same query in a data model and it works as expected. When i try to bring it into a Power BI Data Mart i get an error saying "The field 'Hidden' of the record wasn't found." Has anyone encountered this issue? Any workarounds?


Activity ID: 3322e6e1-b560-701f-4d79-b365931dc065
Request ID: e78c3389-2764-4d5a-931e-7cba9a774927
Status code: 500
Error Code: CdsaMashupUserException
Batch ID: 8afbeeef-efc1-45d2-90af-4754c48b9544@f04f2874-bd39-4eae-9835-b09c23b4c380$2023-04-18T17:16:53.0211674Z@c2ad2435-c223-4066-ae63-213d580dd644

Super User
Super User

Hey @thedatahiker ,


I think this is part of why the datamarts are still in preview.....some of these messages are not very informative and may even lead the wrong way.  I THINK that this means that there is a hidden field (or table/query) in the data that the datamart is trying to access.

I did find this similar message in an older dataflow thread - could be the same issue as in the datamart now.

Dataflows with Excels are failing with "The field ... - Microsoft Power BI Community

Did I answer your question? Mark my post as a solution!

Proud to be a Datanaut!
Private message me for consulting or training needs.

Helpful resources

Fabric Community Conference

Microsoft Fabric Community Conference

Join us at our first-ever Microsoft Fabric Community Conference, March 26-28, 2024 in Las Vegas with 100+ sessions by community experts and Microsoft engineering.

February 2024 Update Carousel

Power BI Monthly Update - February 2024

Check out the February 2024 Power BI update to learn about new features.

Fabric Career Hub

Microsoft Fabric Career Hub

Explore career paths and learn resources in Fabric.

Fabric Partner Community

Microsoft Fabric Partner Community

Engage with the Fabric engineering team, hear of product updates, business opportunities, and resources in the Fabric Partner Community.

Top Solution Authors
Top Kudoed Authors