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
JSR
Helper II
Helper II

When getting data from PowerAutomate Flow: DataFormat.Error: We reached the end of the buffer

Hi,

I get DataFormat.Error: We reached the end of the buffer. 

When trying to do same as this example. https://janbakker.tech/use-graph-api-data-in-power-bi-using-logicapps 

(Create a Power Auromate flow to query Microsoft Grahp and get the response in Power BI)

I've tested it with diffrenet APi calls, and same throw same error.

 

Any help on this please?

 

The Power Automate flow runs ok and I can see the response.

 

let
url = "",
body = "{}",
Parsed_JSON = Json.Document(body),
BuildQueryString = Uri.BuildQueryString(Parsed_JSON),
Source = Json.Document(Web.Contents(url,[Headers = [#"Content-Type"="application/json"], Content = Text.ToBinary(BuildQueryString) ] ))
in
Source

 

 ff2.pngff1.png

1 ACCEPTED SOLUTION
MFelix
Super User
Super User

Hi @JSR ,

 

Sorry for asking this but looking at the blog post you need to past your URL on the code and you present (here on the forum) a code without URL:

 

MFelix_1-1596553779566.png

 

The blog example

 

MFelix_2-1596553803226.png

I don't have any way to text this out but just making some questions that may help or not, do you have your logic app endpoint URL?


Regards

Miguel Félix


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

Proud to be a Super User!

Check out my blog: Power BI em Português



View solution in original post

2 REPLIES 2
MFelix
Super User
Super User

Hi @JSR where you abble to solve the issue?


Regards

Miguel Félix


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

Proud to be a Super User!

Check out my blog: Power BI em Português



MFelix
Super User
Super User

Hi @JSR ,

 

Sorry for asking this but looking at the blog post you need to past your URL on the code and you present (here on the forum) a code without URL:

 

MFelix_1-1596553779566.png

 

The blog example

 

MFelix_2-1596553803226.png

I don't have any way to text this out but just making some questions that may help or not, do you have your logic app endpoint URL?


Regards

Miguel Félix


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

Proud to be a Super User!

Check out my blog: Power BI em Português



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!

November Power BI Update Carousel

Power BI Monthly Update - November 2025

Check out the November 2025 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.