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

Vote for your favorite vizzies from the Power BI Dataviz World Championship submissions. Vote now!

Reply
Anonymous
Not applicable

Cannot convert the value to type list

Hi,

I'm running into a problem again that seems to occur intermittently. 

 

I've already posted about this issue here: https://community.powerbi.com/t5/Power-Query/Cannot-convert-to-type-List/m-p/1971275#M58097

 

At the time, this issue was caused by a session being expired. But the same issue is happening now, and it's not session related.

 

To restate the problem: I think my M needs modification, but I'm not sure how.

let
Source = Json.Document(Web.Contents("https://apiURL/ACCOUNT_INFO?$top=2000",
    [Headers=
        [   
            #"ocp-apim-subscription-key" = Text.Combine({Subscription}),
            #"integrator-key" = Text.Combine({Integrator}),
            #"x-universal-refresh-token" = Text.Combine({Refresh}),
            #"x-universal-directive" = "x",
            #"respos-cache" = "false"
            ]]
        )
    ),
#"Converted to Table" = Record.ToTable(Source),
Value = #"Converted to Table"{0}[Value],
Custom1 = Table.FromList(Value, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
#"Expanded Column1" = Table.ExpandRecordColumn(Custom1, "Column1",
    {"Account_ID", "Account_Title"}
    )
 
in

    #"Expanded Column1"

Here's the error:

 

Expression.Error: We cannot convert the value "https://host/$metada..." to type List.
Details:
Value=https://host/$metadata#ACCOUNT_INFO
Type=[Type]

 

When I'm told to "Go To Error," it seems the offending part is: 

Custom1 = Table.FromList(Value, Splitter.SplitByNothing(), null, null, ExtraValues.Error)

 

Any assistance would be appreciated. Thanks!

2 REPLIES 2
edhans
Community Champion
Community Champion

Try modifying this step:

Value = #"Converted to Table"{0}[Value]

to this

Value = #"Converted to Table"[Value]

The {0} was returing the first value of a list to scalar value, so you can no longer use it as a list in Table.FromList.



Did I answer your question? Mark my post as a solution!
Did my answers help arrive at a solution? Give it a kudos by clicking the Thumbs Up!

DAX is for Analysis. Power Query is for Data Modeling


Proud to be a Super User!

MCSA: BI Reporting
Anonymous
Not applicable

Thanks for this.

 

Looks like progress. A table is now returned, but now each cell is giving me the following Error. Thoughts on next steps?

 

Expression.Error: We cannot convert the value "https://host/$metada..." to type Record.
Details:
Value=https://host/$metadata#ACCOUNT_DETAILS

Type=[Type]

dkpcr5_1-1632245440408.png

 

Helpful resources

Announcements
Power BI DataViz World Championships

Power BI Dataviz World Championships

Vote for your favorite vizzies from the Power BI World Championship submissions!

Sticker Challenge 2026 Carousel

Join our Community Sticker Challenge 2026

If you love stickers, then you will definitely want to check out our Community Sticker Challenge!

January Power BI Update Carousel

Power BI Monthly Update - January 2026

Check out the January 2026 Power BI update to learn about new features.

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.