Employees are able to book accrual balance more than they have?

Summary:

There is one accrual plan employees were already enrolled. here the issue is the employees are able to book their leaves over their accrual balance.

assume there is one employee he has 10days of accrual balance if he tries to book more than 10days like 15days system is allowing to book more than that.

Content (required):

There is one accrual plan employees were already enrolled. here the issue is the employees are able to book their leaves over their accrual balance.

assume there is one employee he has 10days of accrual balance if he tries to book more than 10days like 15days system is allowing to book more than that.