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

Level up your Power BI skills this month - build one visual each week and tell better stories with data! Get started

Reply
Anonymous
Not applicable

Adding REST API as Custom Column - Error: "We cannot convert a value of type Record to type List"

Hello All,

 

I have a table of identifiers using a rest API call. The table looks like this:

identifierURLdatecreatedauthorizeddate
a7f8sy9hh7g8ft55https://api.neogov.com/rest/personnelactions/hire/a7f8sy9hh7g8ft552023-02-15T10:25:14.02700002023-02-15T10:25:14.0270000
sjgg839hkwjr0fkthttps://api.neogov.com/rest/personnelactions/hire/sjgg839hkwjr0fkt2023-02-15T10:25:14.02700002023-02-15T10:25:14.0270000

 

I am adding a custom column that calls another api that reads the identifier and returns the api information.  Here is the code I use for the custom column. 

 

let

Source= Json.Document(Web.Contents("https://api.neogov.com/rest/personnelactions/hire/" & [ID], [Headers=[#"Content-Type" = "application/json",#"Authorization"= "Basic Token"]])),
#"Converted to Table" = Table.FromList(Source, Splitter.SplitByNothing(), null, null, ExtraValues.Error)
in
#"Converted to Table"

 

It errors for all rows saying a record can not be converted to list. Any help would be appreciated.

1 ACCEPTED SOLUTION
Anonymous
Not applicable

I removed a conversion to table and just clalled the records then expanded the record. Here was teh code that worked:

let

Source= Json.Document(Web.Contents("https://api.neogov.com/rest/personnelactions/hire/" & [ID], [Headers=[#"Content-Type" = "application/json",#"Authorization"= "Basic Token"]]))

in

source

View solution in original post

2 REPLIES 2
Anonymous
Not applicable

I removed a conversion to table and just clalled the records then expanded the record. Here was teh code that worked:

let

Source= Json.Document(Web.Contents("https://api.neogov.com/rest/personnelactions/hire/" & [ID], [Headers=[#"Content-Type" = "application/json",#"Authorization"= "Basic Token"]]))

in

source

lbendlin
Super User
Super User

Please read the Web.Contents documentation again (especially the RelativePath section). Also make sure that your API call returns data and not an error message.

Helpful resources

Announcements
April Power BI Update Carousel

Power BI Monthly Update - April 2026

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

Fabric SQL PBI Data Days

Data Days 2026 coming soon!

Sign up to receive a private message when registration opens and key events begin.

New to Fabric survey Carousel

New to Fabric Survey

If you have recently started exploring Fabric, we'd love to hear how it's going. Your feedback can help with product improvements.

Power BI DataViz World Championships carousel

Power BI DataViz World Championships - June 2026

A new Power BI DataViz World Championship is coming this June! Don't miss out on submitting your entry.

Top Solution Authors
Top Kudoed Authors