API-calls get a timeout if package is over 2,5KB (DEV-environment)

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Posted on by Chris Brill

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Hello!

I'm calling API's in my Dev-environment. This works fine as long as the JSON-Package coming back is up to 2,5KB. I get an answer in a few microseconds. But as soon as the JSON is 2,6KB or bigger, the request runs into a timeout. BC creates the record correctly, it's just not able to send it.

I'm using BC24.1 in a Docker-Container created with the BCContainerHelper in PowerShell.

I've talked with our IT-security team, with DEVs from our partner, but they have no idea, what could cause this.

I know that this is difficult to answer, but maybe someone has run into this problem as well. I'm thankful for any suggestion how to solve this.

Thanks!
Christopher

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Dynamics 365 Business Central

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Ramesh Kumar 7,527 Super User 2025 Season 2 on at

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Hi Chris,

I not sure if you already check but I would say can you please check Increase memory and CPU limits in the Docker container configuration and API Timeout Configuration.

Thanks!

Ramesh

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Suresh Kulla 50,243 Super User 2025 Season 2 on at

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Are you having this issue with the container or on Saas, if the container I would recommend you increase the memory limit to 16G or so when you create the container and try it again.

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Jainam M. Kothari 15,631 Super User 2025 Season 2 on at

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Hello,

I Do Agree with the Experts, Mr. Suresh Kulla and Mr. Ramesh Kumar.

You need to Increase the Memory Limit.

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Khushbu Rajvi. 20,275 Super User 2025 Season 2 on at

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Hope this helps as well:https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/api-reference/v2.0/dynamics-rate-limits

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Chris Brill 112 on at

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Thanks to all of you,

but that didn't change anything. The CPU is chilling anyway and there are multiple GB of free memory.
On the other side:
My problem isn't a huge amount of data. 2,6KB, that's equivalent to 105 records in the G/L-Entry-API. 104 records came back in 32ms.

Are there any other suggestions? I'm still looking for a solution.

Best regards,
Chris

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YUN ZHU 95,331 Super User 2025 Season 2 on at

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Hi, This looks like a limitation in docker, have you tested it in the cloud version?

PS: https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/administration/operational-limits-online#ODataServices

Thanks

ZHU

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Chris Brill 112 on at

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Hello Yun Zhu,
we don't have a cloud version, but we don't experience those problems on our test-server (without Docker).
Of course there also other differences between the two systems despite Docker.

But as I only make single requests with one user I'm very far away from the request limits.

I also tried the very basic CRONUS-tenant, created with the BC-ContainerHelper and I have the same problem. So Docker seems to be a essential part, but I doubt it's a setting. Maybe something went wrong during a basic installation or an update. I'm gonna give it a try and reset windows. Maybe that'll make a difference.

Thanks so far and I'm still open to suggestions. Just in case. ;-)

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Gerardo Rentería Ga... 25,157 Most Valuable Professional on at

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Hi, good day
I hope this can help you, and give you some hints.

Solved: Business Central in a Docker container not responding: "bcserver took too long to respond"

Best Regards
Gerardo

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Chris Brill 112 on at

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Hello Gerardo,

thanks for the suggestion. I checked my container and the parameter "isolation" is already set to "hyperv". That parameter is set in the PowerShell-Skript I use.

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Chris Brill 112 on at

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Hello everybody,

I did find a solution. It is actually a quite specific combination that causes this behaviour:

BC24 + isolation mode hyperv + no SSL

Due to this blog post (Docker container BC v24 API timeout with large result set - christianbraeunlich.com) the solution is to either switch on SSL or using isolation mode process.

I hope this at least helps someone else to find the answer faster.

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