Message type: E = Error
Message class:  HRPIQ00REGIST - Messages Related to Registration 
Message number: 020
Message text: End date of sessional registration is before the change of program
The end date of sessional registration (&V1&) is before the change of
program date.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Check the end date.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message HRPIQ00REGIST020 typically occurs in the context of student registration processes within the SAP Student Lifecycle Management (SLCM) module. This error indicates that the end date of a sessional registration is set before the change of program date, which is not allowed as it creates a logical inconsistency in the registration data.
Cause: The error arises due to the following reasons: Date Configuration: The end date of the current sessional registration is incorrectly set to a date that is earlier than the date when the program change is being processed. Data Entry Error: There may have been a manual entry error when inputting the dates for the sessional registration or the program change. System Configuration: There might be issues with the configuration of the academic calendar or registration rules in the SAP system.
Solution: To resolve this error, you can take the following steps: Check Dates: Review the end date of the sessional registration and
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