Per policy, employees should not apply for more than their annual entitlement. However, the system does not prevent it. With the allowance of going negative 40 hours, they could enter their full-year entitlement plus another 40 hours.
Based on your question, it sounds as if you are using Employee Self-Service (ESS) or a similar method for data entry. Although I'm not that familiar with ESS, there may be an opportunity to add a limit at data entry.
Dig Deeper on SAP HCM
Related Q&A from Sheryl Springer Middleton
SAP HR expert Sheryl Middleton explains how to view data in quota overview tables after running Time Evaluation in SAP HR. Continue Reading
An SAP HR users wants to know how to assign a person to two different personnel numbers in SAP HR while generating a single invoice. Continue Reading
An SAP HR user wants to know if there a way to automatically calculate an allowance in SAP HR that is based on the basic salary of the next higher ... Continue Reading