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Error while trying to sign into api.businesscentral.dynamics

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Posted on by CU27091600-0

Hello,

i am getting this error while trying to sign into API. I tried with in chrome/edge with regular password and web service key.

api.businesscentral.dynamics.com

{"error":{"code":"Authentication_InvalidCredentials","message":"The server has rejected the client credentials.  CorrelationId:  68c4bb8f-eb12-4c45-8f26-ee16aa4a0fe6."}}

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Dynamics 365 Business Central

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JAngle 133 on at

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Is this SaaS? If so basic authentication has been deprecated: docs.microsoft.com/.../web-services-authentication

Move to OAuth. Plenty of documentation available for aiding with this. Plenty of good blog posts here: https://www.kauffmann.nl/

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

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Hi, hope the following also helps.

https://yzhums.com/20690/

PS: some info from Kauffmann

Thanks.

ZHU

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Krati21 77 on at

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Hi,

If you try to log into BC20 SaaS environment where web-service key is deprecated, you get an error like this:

If that's the case, previous answers on the post will help where you need to use OAuth.

But your error probably means you are just logging in with a wrong web-service key. Please make sure you use the latest web-service key from the user card.

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Mayank M Jangid 8 on at

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https://madhda.com/error-the-server-has-rejected-the-client-credential-in-business-central/

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Moisesito 80 on at

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Hi, I know this is an old post, but Just in case you're still looking for the solution,

Go to Azure portal (https://portal.azure.com)

Search for App Registration

Create New App eg. BC Integration

Once the App registration is created, on the left Pane sellect API Permissions. Add API Permissions > Search and Select (Business Central > API.Read Write Access). Select Applications Permissions not Delegate Permissions and click Add Permission.

It will return to the App Permission List. Click on Grant Admin Consent.

Now on the left pane select Certificates & Secrets.

Click on new client secrets.

Add Description (e.g BC Integration App), Select an Expiry Date, click add.

Make note of the Secret Value column as this will disappear. (You will need to provide this value to the external App, so they can access the api)

In the left pane select Overview, make note of the Application (client) ID. This will also be needed by the external App

On the overview page, you will also see the option for Endpoints. click on it to open a pane on the right. Copy the URLs (OAuth 2.0 authorization endpoint (v2), OAuth 2.0 token endpoint (v2)) This will also be needed in the apps for authentication.

Set Redirect URL to https://businesscentral.dynamics.com/OAuthLanding.htm. To do this, Stay on the Overview Page and in the midle you would see Redirect URIs : Add a Redirect URI. Click on the link, That should open a different page, Click on Add a platform > Web and add the url in the textbox provided https://businesscentral.dynamics.com/OAuthLanding.htm, Press add to continue. (In case the URL is incorrect, the correct URL is provided when you try to grant consent to the app in Business central in step 17)

Go to Business Central Search for Microsoft Entra Applications

Press the new button

Copy the client ID/ App Id from the App registration (Client and app ids are the same thing)

Change the state to enabled

Select the grant access button to grant permissions

Add a permission set e.g. SUPER (DATA) or anything suitable for the situation. For UAT Super (DATA) is ok, but in production, the permissions need to be specialised.

In case you are using a sandbox that has been created from another environment, and you are planning to reuse the Entra Application. Make sure to disable the Entra Application and re-Enable it as this can give a weird authentication error.

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