Multi item order with line item zero.

Hi,

We are creating trim order in APO using 'BAPI_MOSRVAPS_SAVETMPLPPM'. Then we are converting Trim order into production order by marking conversion indicator. It creates multi item order in ECC and transfers back to APO.

Some time we are facing problem

Order header quantity-3000

Item 1.-2000

Item2-0.

Though parameter in BAPI states operation quantity is sum of item quantity how this difference?

Why production order item quantity 0.

Regards,

Santosh