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APIs in Business Central showing authentication failed

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Posted on by Jyotsna NAV

585

Hello Experts,

I am using Basic Authentication and web Access Key to hit Business Central API: https://api.businesscentral.dynamics.com/v1.0/domainname/Sandbox/api/beta/companies with a GET request.

Unfortunately, I am getting an error from Postman:

{

"error": {

"code": "Authentication_InvalidCredentials",

"message": "The server has rejected the client credentials. CorrelationId: 5e0b0833-cef9-4e89-9628-56400f373b2a."

}

}

Could you please help me out with this.

Thank you in advance.

Regards

Jyotsna Oberai

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adel@vsi 45 on at

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RE: APIs in Business Central showing authentication failed

Following worked for me for basic authentication.

1. User user name without domain

2. If using google chrome, user developer tools to get the web-services key. Simply copy doesn't copy whole thing.
Jyotsna NAV 585 on at

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RE: APIs in Business Central showing authentication failed

Hi Stefano,

It worked! I was missing v1.0 in the url. Thanks a lot!

Thank you everyone for your help :)
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Stefano Demiliani 37,152 on at

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RE: APIs in Business Central showing authentication failed

The endpoint I’ve provided works.
If the endpoint is correct, please check username (use it without domain), web service access key and its expiration date.
Jyotsna NAV 585 on at

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RE: APIs in Business Central showing authentication failed

I tried that. But I am still facing the same error. Don't know what the problem is :(
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Stefano Demiliani 37,152 on at

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RE: APIs in Business Central showing authentication failed

It seems you're missing the API version. Correct url:

api.businesscentral.dynamics.com/.../companies
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Binesh 7,885 on at

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RE: APIs in Business Central showing authentication failed

Hello Jyotsna,

if you are make sure your web access key is correct then just make a small change in the API URL

Instead of v1.0 replace with v2.0 as shown below
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TeddyH 12,775 Moderator on at

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RE: APIs in Business Central showing authentication failed

Are you using the customer's user ID or partner user ID ?
Jyotsna NAV 585 on at

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RE: APIs in Business Central showing authentication failed

Thank you for the revert.

The credentials are correct. The URL is the one that exists in web service: https://api.businesscentral.dynamics.com/tenantId/Sandbox/api/beta

Still no luck. Please suggest..

Thank you.

Regards

Jyotsna Oberai
Suggested answer

TeddyH 12,775 Moderator on at

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RE: APIs in Business Central showing authentication failed

Make sure you use the User Name and Web Service Access Key that are written in the User Card.

That user also needs to have BC license in that environment. You can't use partner login.

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