Movement Type in VL09

Hi Everybody,

I've been working with User Exit V50PSTAT for the Transaction Codes VL02N and VL09. Based on the Movement Types in both the Transaction Codes, I need to update a Custom Table. When Posting Goods Issue in VL02N, I need to check the Movement Type, if it is 601, I need add the Quantity to the existing Quantity in Custom Table and update. When Reversal in VL09, I need to check the Movement Type, if it is 602, I need to subtract the Quantity from the existing Quantity in Custom Table and update. But when I debug both the Transaction Codes, in VL02 I get all the line items with Movement Type 601, which is good. But in the Transaction Code VL09, I didn't get any line item with Movement Type 602, which should be the Reversal Movement Type. Can anybody tell me what is the way to identify the Reversal Movement Type in VL09.