Showing results for 
Search instead for 
Did you mean: 
New Member

Error 400. The size of the request headers is too long. Dynamics NAV connection

Hi, I use Dynamics NAV connector. 

When I look at a table with records more than 200 count, than I get an error message "Error 400. The size of the request headers is too long."


More detailed in my blog

Community Support
Community Support

Hi @dkatson,


The link you included is not accessible. 



Also, please notice that this forum is for Flow issue community.




Community Support Team _ Mona Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Hi @v-monli-msft

Yes, thank you. I've made link accessible.


This issue is related to MS Flow connection with NAV. That is why it is here. 


Helpful resources

MPA_User Group Leader_768x460.jpg

Manage your user group events

Check out the News & Announcements to learn more.

V3_PVA CAmpaign Carousel.png

Community Challenge - Giveaways!

Participate in the Power Virtual Agents Community Challenge

Carousel 2021 Release Wave 2 Plan 768x460.jpg

2021 Release Wave 2 Plan

Power Platform release plan for the 2021 release wave 2 describes all new features releasing from October 2021 through March 2022.

R2 (Green) 768 x 460px.png

Microsoft Dynamics 365 & Power Platform User Professionals

DynamicsCon is a FREE, 4 half-day virtual learning experience for 11,000+ Microsoft Business Application users and professionals.

Top Solution Authors
Users online (1,467)