Batch Determination

Hi Gurus,

When my selection criteria for BD is by Date, I am getting following errors in BD,

1. Even when the stock of particular batch is zero, system is picking up that batch no. in BD which I don't want.

2. Under batch selection for the available quantity, I am not getting the exact batch quatity instead maximum quantity of "9 999 999 999.000".

Pls tell me the solution.

Sekhar