Scenario: During API testing with Postman, a tester encounters a scenario where a specific request consistently returns an unexpected response code. What steps should the tester take to troubleshoot this issue effectively?

To troubleshoot unexpected response codes, testers should thoroughly analyze request and response details. This includes reviewing headers, payloads, and server responses. By carefully examining the specific request configuration and cross-referencing it with the API documentation, testers can identify issues and potential discrepancies, helping to troubleshoot and resolve the problem effectively.