IDOC for Delivery Confirmation

Hi All,

I need to check for some Idocs.

I need to find out if an IDoc was recieved which had the confirmation data for a delivery made.

I have a delivery made to the customer and they have sent the IDoc for confirmation of th same. How can i find out which Idoc No was sent for the same. I tried to search using WE02 and the partner Number but couln't find.

let me know if any one has any thoughts on this.

Thanks in advance..!