Error Msg during Reversal of Goods Issue

Hi,

During reversal of Goods Issue, we have encountered the following error msg:

"no inbound delivery exists for the replenishment deleivery 'del no' ".

We have used the foll. function modules in our pgm:

1. ENQUEUE_EZLIKP

2. WS_REVERSE_GOODS_ISSUE

3. DEQUEUE_EZLIKP

Please help us identify from where the error message is being triggered.

Thanks.

Vinaya