How to do manual spot re-checks for post-migration testing?

Performing manual spot re-checks for post-migration testing involves verifying specific functionality or components of a system after it has been migrated to a new environment. Here are some steps to follow for conducting manual spot re-checks:

1. Understand the Migration: Gain a thorough understanding of the migration process, including the scope of the migration, the systems involved, and any changes or updates that were made.
2. Identify Critical Functionality: Determine the critical functionalities or components that must be spot-checked after the migration. These can be areas of the system that are prone to issues or greatly impact the overall functionality.
3. Define Test Cases: Create specific test cases for each critical functionality or component. Test cases should outline the steps to be followed, the expected results, and any specific data or conditions required.
4. Set Up Test Environment: Configure the test environment to mirror the migrated system as closely as possible. This includes the hardware, software, and network configurations. Ensure that any necessary test data is available.
5. Execute Test Cases: Run the defined test cases against the migrated system, focusing on the critical functionalities identified earlier. Follow the steps outlined in each test case, input the required data, and observe the system's behavior.
6. Compare Results: Compare the observed results with the expected results mentioned in the test cases. If there are any discrepancies, investigate the root cause and record any issues or defects encountered during the testing process.
7. Document Findings: Document the findings, including any issues or defects discovered during the spot re-checks. Provide detailed information about the problem, steps to reproduce it, and any additional observations or insights.
8. Prioritize and Address Issues: Prioritize the identified issues based on their severity and impact on the system's functionality. Work with the development or migration team to address the issues and resolve them in a timely manner.
9. Retest Fixed Issues: Once the issues are resolved, retest the fixed components to ensure that the changes have been implemented successfully and that the critical functionalities work as expected.
10. Report and Communicate: Prepare a comprehensive report summarizing the spot re-checks, findings, and any actions taken. Share the report with relevant stakeholders, including the project team, management, and any other individuals involved in the migration process.