Altpgen Error while generating CRM table for integration.

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Posted on by Aryan

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ALL the things are working fine , I have also registered int he Azure Portal Microsoft Intra ID but i am facing the below issue after the authentication .

error CDS0002: Unable to retrieve metadata for 'attribute'. Reason: The HTTP request was forbidden with client authentication scheme 'Anonymous'..

Pls help me solve this issue and why this is occuring.

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Dynamics 365 Business Central

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KodeKounter 8 on at

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Hello Reader,

There is one specific user is getting created while we integrate Business central with Microsoft Dynamics 365 Sales or CRM. that application user might have named as Business Central Integration in the CRM side and you have to check which role is assigned to that user on CRM. because of the access right of that assigned role you're facing this error. you can assign Business Central Dataverse Integration Role to your application user which is created automatically.

If this same role is assigned to the application user and you're trying to fetch proxy table of custom entity than you should give access of your custom entity to the Business Central Dataverse Integration role.

I hope this solution will resolve the issue.

Please verify this answer if it work for you to help others finding their solution.

Thanks.

Krina Kanani

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Ramesh Kumar 7,529 Super User 2025 Season 2 on at

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The error message indicates that the request is being made with an Anonymous authentication scheme. Ensure that the authentication is properly configured to use OAuth or Azure Active Directory for your connection to Dynamics 365 and Business Central and Double-check the authentication settings in your connection configuration. Make sure you are using the correct Client ID and Client Secret or Certificate for OAuth authentication.

https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/webservices/authenticate-web-services-using-oauth

https://learn.microsoft.com/en-us/answers/questions/849752/error-the-http-request-was-forbidden-with-client-a

Thanks, Ramesh

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Teddy Herryanto (Th... 14,284 Super User 2025 Season 2 on at

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It doesn't look like you are using the right authentication.

Check this blog post for reference on using altpgen.

https://thatnavguy.com/d365-business-central-how-to-use-al-table-proxy-generator-tool-altpgen-with-clientid-and-redirecturi/

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YUN ZHU 95,729 Super User 2025 Season 2 on at

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Hi, hope the following helps.

Business Central 2024 wave 1 (BC24): Changes to AL Table Proxy Generator tool (altpgen) – Two additional arguments: ClientId and RedirectUri

https://yzhums.com/49871/

Thanks.

ZHU

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Aryan 184 on at

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I have tried each and every thing but unable to understand this i have done what u guys have said but its still showing that same error
pls help me solve this issue as its very urgent ,

if want pls provide me time and contact info i can even connect?

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Khushbu Rajvi. 20,603 Super User 2025 Season 2 on at

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Please check this:https://learn.microsoft.com/en-us/answers/questions/849752/error-the-http-request-was-forbidden-with-client-a

https://learn.microsoft.com/en-us/answers/questions/2006854/facing-http-request-was-forbidden-for-365-dynamics

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Vahid Ghafarpour 12,168 Super User 2025 Season 2 on at

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Gerardo Rentería Ga... 25,236 Most Valuable Professional on at

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

Solved: The HTTP request is unauthorized with client authentication scheme 'Anonymous'.

Solved: When trying to enable connection to CDS / Dataverse from OnPrem Business Central an error may occur

Solved: Error while exporting - The remote server returned an error: (403) Forbidden

Best Regards
Gerardo

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Suresh Kulla 50,245 Super User 2025 Season 2 on at

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Check this link

https://ksdconsultancy.blog/2021/09/24/using-al-table-proxy-generator-tool-to-create-integration-tables-in-business-central-for-the-dataverse-table/

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YUN ZHU 95,729 Super User 2025 Season 2 on at

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It's not clear where your problem lies. The final command is as follows. I hope it can give you some hints.

.\altpgen -project:"C:\Users\yzhu\Documents\AL\BC25P" -packagecachepath:"C:\Users\yzhu\Documents\AL\BC25P\.alpackages" -serviceuri:"https://orge9084970.crm.dynamics.com" -entities:cra00_labbook -baseid:50100 -tabletype:CDS -clientid:61b08a00-14bb-40e7-bac8-def3bc9349a4 -redirecturi:"http://localhost"

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