How to change serialized Equipment status AVLB to ESTO.

"Ideally While installation IE4N to Superior equipment, system automatically issue the serialized equipment from warehouse (system status ESTO in warehouse) and after installation system status of serialized equipment changes to ASEQ and stock is reduced simultaneously.

In case of dismantle IE4N from superior equipment,serialized equipment's status changed from ASEQ to ESTO and the stock is updated in warehouse.".  this is the ideal case and generally the same happens.

But Now while dismantle serialized equipment status is showing AVLB from ASEQ while it should be ESTO and thats the same reason not updated in stock in warehouse.

So Please help how this system status can be changed to ESTO and update stock accordingly.

Thanks..