Salesforce Org

1. Go to Salesforce Org and open the required Connected App which will be used for establishing SFDX connection. Click Edit. 

2. Upload the Certificate after enabling Use digital signatures checkbox.

   

3. Edit the OAuth Scopes to include below highlighted scope.

   

   
   

4. Click Save and Continue when prompted with below screen.

   

   
   

5. Open the Connected App again to the below screen. Click on Manage

   

   
   

6. Click on Edit Policies and select below highlighted option under Permitted Users. Click Save.

   

Opsera

1. Login to Opsera. Click on Tool Registry and open the respective Tool Registry where above Connected App details are saved.

   

   
   

2. Click on Connection Tab. Select Build Type as highlighted below. Click on Save.