@Sai Prathap Thank you for reaching out to us, regarding the above mentioned issue, check exploring the [-1:] index as documented here for fetching the startDate value - https://learn.microsoft.com/en-us/entra/identity/app-provisioning/sap-successfactors-integration-reference#how-pre-hire-processing-works:~:text=How%20pre%2Dhire%20processing%20works and see if that helps in resolving the above mentioned issue.
Let me know if you have any further questions, feel free to post back.