Order Confirmation Qty should not Exceed Than Total Order Qty. in Next Operation

Hi Gurus,

Please suggest me the best solution for:

I have a production order of 100 qty.Suppose 1st i confirm operation-10 with Yield-10 ,Scrap- 5 and Rework- 5 in this case if i enter more than 100 then system throw an error "Total confirmation quantity not equal to planned confirmation quantity" that i maintained in OPJB and "Error when over delivery tolerance is exceeded " in OPK4.

Now, i want in 2nd operation-20 system should behave same thing like operation-10 (Total entered Qty. should not be grater than order qty.)

I do not want to put error message " Error when operation sequence is not adhered to" in OPK4.

Because in next operation i need to put qty. more than 1st yield confirmed qty.

So,please suggest how can i fulfill this requirement.

Best Regards,

Vivek