How to use POSTMAN to access D365FO Odata endpoint

Time needed: 10 minutes.

Steps

1. Start Postman -> manage environments

   Select Manage environments to create or update an environment.
   Enter a name for the environment, and then select Bulk Edit

2. Bulk edit

   Enter key-value pairs as shown in the below image. Enter one pair per line, and separate the key and value by using a colon (:)
   Following things need to be added
   a) tenant_id – Check under azure active directory to Azure portal
   b) client_id – created during app registration on Azure active directory
   c) client_secret – created in certificate & secrets section
   d) grant_type – enter value as client_credentials
   e) resource – enter D365FO environment URL (note it should not end with /)
   
   

3. New POST request

   URL –https://login.microsoftonline.com/:tenant_id/
   oauth2/token
   
   Enter Environment keys shown in the below image to get access token which will be used in the Odata query authentication.

4. Go to Tests Tab

   On the Tests tab, create a test that validates that the response is reasonable, and then stores the returned authorization token in an environment variable named bearerToken
   ——————————————————————————-
   var json = JSON.parse(responseBody);
   tests[“Get Azure AD Token”] = !json.error && responseBody !== ” && responseBody !== ‘{}’ && json.access_token !== ”;
   postman.setEnvironmentVariable(“bearerToken”, json.access_token);
   —————————————————————————–
   
   

5. New GET request
   URL – https://YourD365URL.com/data/EntityName

   We need to create Authorization key in header whose value will be ‘Bearer {{bearerToken}}’
   We have used the environment variable created in the previous step to store the token value.
   Hit the send button and voila you have the GET response from the D365FO environment.