Qty Wrong While Capturing Excise Invoice in STO Scenario.

Dear All,

I made an STO for 50 Kgs from A Plant (Supplying Plant) to B Plant (Recieving Plant).

A PLANT

ME21N u2013 Created STO on A Plant and Delivery Plant as B Plant

MB1B with 351 Movement for 2 Batches. 1st batch is for 20 Kgs and 2nd batch is for 30 Kgs

J1IV u2013 Created Excise invoice for two batches against Material Document.

B PLANT

J1IEX u2013 While capturing the excise invoice based on STO in B Plant System is showing the quantity as 50 Kgs. If I enter the Invoice Number of A Plant then quantity is getting changed as 20 Kgs automatically (i.e. 1st batch Qty). Why it is happening like this and how I have to split two batch numbers in J1IEX.

How can I overcome this problem.

Thanks and regards,

Kumar