Assistance Needed with Business Central API Authentication and Inventory Fetch

Hello,

I am working on retrieving inventory from Business Central to update the data for each SKU in our database. To begin, I attempted to obtain an access token using the following API: https://login.microsoftonline.com/{{tenantID}}/oauth2/v2.0/token

Here is the request:

,

and the response I received from Azure is as follows: { "token_type": "Bearer", "expires_in": 3599, "ext_expires_in": 3599, "access_token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6Ikg5bmo1QU9Tc3dNcGhnMVNGeDdqYVYtbEI5dyIsImtpZCI6Ikg5bmo1QU9Tc3dNcGhnMVNGeDdqYVYtbEI5dyJ9.................................................." }

In the next step, I need to retrieve the company ID from Business Central using the following API: https://api.businesscentral.dynamics.com/v2.0/{{environment}}/api/microsoft/automation/v2.0/companies

I passed the Authorization header with the value Bearer {{accessToken}}. However, the response I received was: { "error": { "code": "Authentication_InvalidCredentials", "message": "The server has rejected the client credentials. CorrelationId: 794c8b3b-f5fc-4dca-a32d-761a6b0acceb." } }

Could you please assist me in resolving this authentication issue so that I can successfully retrieve the company ID?

Additionally, I would appreciate guidance on how to fetch inventory data from Business Central, specifically for items that may have changed in the last hour.

Thank you for your assistance.

Best regards, Rahmat