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Hit breakpoints on SaaS Business Central when calling web services

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Hi,

After many failed attempts I'm looking for help.

I used to debug my apis by setting them into actions then runing debug, but it's seems that it's possible to do it by attach request.

I try to call webservices from Business Central with Postman or Insomnia and hit breakpoints set in Visual Studio.

My launch.json :

My webservice (API Page) :

When i run / Attach: Microsoft cloud sandbox / I get this message :

Then I call my webservice in Insomnia and get a good response (url call = OData url generated from web service entry in bc) :

But my breakpoints are never hit.

Does someone know what step i'm missing here?

Thanks in advance for your help,

Sincerely yours

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Dynamics 365 Business Central

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Inge M. Bruvik 1,111 Moderator on at

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Maybe you can try to use telemetry to figure out what is going on in your API ?

Please refer to this documentation:

https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/administration/telemetry-webservices-trace?WT.mc_id=email&sharingId=DX-MVP-5005315

Or you can look into snapshot debugging:

https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/developer/devenv-snapshot-debugging?WT.mc_id=email&sharingId=DX-MVP-5005315

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ev_enter 9 on at

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I also struggled with this and found that you need to add the user property in your configuration. This is the user id of the authenticated user making the call.

{

"name": "Attach: Microsoft cloud Sandbox",

"type": "al",

"request": "attach",

"environmentType": "Sandbox",

"environmentName": "Sandbox",

"breakOnError": "All",

"breakOnRecordWrite": "None",

"enableSqlInformationDebugger": true,

"enableLongRunningSqlStatements": true,

"longRunningSqlStatementsThreshold": 500,

"numberOfSqlStatements": 10,

"breakOnNext": "WebServiceClient",

"tenant": "c8xxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx5",

"userId": "2exxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx5"

},

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YUN ZHU 95,718 Super User 2025 Season 2 on at

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Hi, hope the following helps.

Business Central 2023 wave 1 (BC22): Attach AL debugger to active session or next session (Specific user)

https://yzhums.com/35078/

Thanks.

ZHU

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