Showing results for 
Search instead for 
Did you mean: 
Level: Powered On

Underscore at the beginning of internal SPO column name / "search" filter query?

I'm trying to use a filtered "Get Items" step to pull up a list of SPO list queries in a certain category, but I've discovered that the internal name for the column begins with an underscore (%5F). I've tried having my entry for the "Filter query" field be:
_Category eq 'category name'
%5FCategory eq 'category name'
but both of those cause the step to fail. How do I phrase my query so that it works, or, failing there a "filter query"-friendly query that filters by rows containing a phrase?

Thank you!

Community Support Team
Community Support Team

Re: Underscore at the beginning of internal SPO column name / "search" filter query?

Hi @beck_,


Could you please share more details about the "%5FCategory" column in a sharepoint list?

What is the type of "%5FCategory" column?


I have made a test on my side and have created a "%5FCategory" column in a sharepoint list with Single line of text type.


You could refer to screenshot below to create the flow:



The expression in the Filter Array field as below:

OData__x0025_5FCategory eq 'a'


The flow would run successfully as below:



Best regards,




Level: Powered On

Re: Underscore at the beginning of internal SPO column name / "search" filter query?

Hello Alice,


The column type is also a single line of text. However, when I ran the query that you provided (with a replaced with the desired value), the Flow returned a 400 error, with the following detail:

Column 'OData__x0025_5FCategory' does not exist. It may have been deleted by another user.


Trying the query without OData  or OData_ returns the same error.

Helpful resources


Microsoft Flow Online Conference

Join us for a FULL day of FREE Microsoft Flow Sessions from some of the best minds in the industry!


Watch Sessions On Demand!

Continue your learning in our online communities.

Power Platform 2019 Release Wave 2 Plan

Power Platform 2019 Release Wave 2 Plan

Features releasing from October 2019 through March 2020


Flow Community User Group Member Badge

Fill out a quick form to claim your user group badge now!


New Flow Community Board!

Check out the new Microsoft Flow Community Blog Topic Suggestion board!


Microsoft Learn

Learn how to build the business apps that you need


Power Platform World Tour

Find out where you can attend!


Webinars & Video Gallery

Watch & learn from the Flow Community Video Gallery!

Top Kudoed Authors
Users Online
Currently online: 247 members 5,204 guests
Please welcome our newest community members: