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It is not possible to add a breakpoint at line number in visual studio code

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Posted on by yaza

When I try to debug bc in visual studio code I get this error:

Error: It is not possible to add a breakpoint at line number 428 in application object type CodeUnit, ID 50417. Check that the resource exposure policies applied to this extension allows debugging.

Am I missing rights?

Gr. Youssef

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Dynamics 365 Business Central

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Gerardo Rentería Ga... 27,621 Super User 2026 Season 2 on at

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Hi

I hope this can help you and give you some hints.

allowDebugging setting.

Resource exposure policy setting - Business Central | Microsoft Learn

BR

GR
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Mohamed Amine Mahmoudi 26,826 Super User 2026 Season 1 on at

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Hi @yaza,

you must ensure that the allowDebugging property has the value true in the app.json file.

Best regards,

Mohamed Amine MAHMOUDI
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Saurav.Dhyani 14,481 User Group Leader on at

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Hi,

Is the object part of your extension?

If yes, then you should be able to debug the object and also able to set breakpoint.

Refer this video for debugging - https://youtu.be/TgXNXxKL2yc

Regards,

Saurav Dhyani

https://bit.ly/SubscribeSauravYouTube
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YUN ZHU 103,294 Super User 2026 Season 2 on at

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More details: Business Central 2021 wave 2 (BC19): Richer access control for extension source in cloud environments (‘showMyCode’ -> ‘resourceExposurePolicy’)

https://yzhums.com/17688/

Thanks.

ZHU
yaza 50 on at

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I also added this to my app.js:

"resourceExposurePolicy": {

"allowDebugging": true,

"allowDownloadingSource": true,

"includeSourceInSymbolFile": true

},

Still getting the error.
ERPlatanos 73 on at

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Has anybody figured this out yet?

I'm having the same issue
Gerardo Rentería Ga... 27,621 Super User 2026 Season 2 on at

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hi

I was able to find this: Unable debugging Business Central 23 · Issue #7568 · microsoft/AL · GitHub

Best

GR