Which type of testing should be done after a release upgrade has occurred?

Release upgrades in SAP S/4HANA Cloud Public Edition introduce new features and updates, necessitating testing to ensure system stability.

Option A: Regression testsCorrect. Regression testing is performed after a release upgrade to verify that existing functionalities continue to work as expected. SAP’s official documentation recommends regression testing to validate that new changes do not negatively impact core processes.

Option B: User Acceptance testsIncorrect. User Acceptance Testing (UAT) is typically conducted during the initial implementation or major configuration changes, not specifically after a release upgrade.

Option C: String testsIncorrect. String tests validate specific process flows during implementation, not post-upgrade scenarios.

Option D: Integration testsIncorrect. Integration tests focus on system connectivity during implementation, not post-upgrade validation of existing functionality.