Message type: E = Error
Message class:  HRPIQ00ACCALENDAR - Messages for the Academic Calendar 
Message number: 018
Message text: Select lines to copy
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The SAP error message HRPIQ00ACCALENDAR018 with the description "Select lines to copy" typically occurs in the context of the SAP HR (Human Resources) module, particularly when dealing with the planning and management of attendance calendars or similar data structures.
Cause: This error message usually indicates that the user is attempting to perform a copy operation (such as copying attendance data or calendar entries) without having selected any lines or entries to copy. The system expects at least one line to be selected for the operation to proceed.
Solution: To resolve this error, follow these steps: Select Lines: Ensure that you have selected the appropriate lines or entries that you wish to copy. This can usually be done by clicking on the checkbox next to the entries in the list. Check Filters: If you are using any filters or search criteria, make sure that they are set correctly so that the relevant entries are displayed and can
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