Leave quota exceeds, but it is not validated in ESS

Hi Folks

In ECC leave quota is not validated in ESS. But in ECC it is validating.

For example:  I have Annual leave Quota for 10 Days for this year.

                       If I create leave greater that 10 Days in ECC i.e. in PA30 i get this error "

Not enough quota 10 for attendance/absence 0100 on XX.XX.2016 for personnel no. XXXXXXX".

But in ESS when i create Annual leave more than 10 Days. No Error displayed, Why ?. How this can be fixed.

Regards

Surjith