Hi Keshav,
As Dave said at the top, plenty of notes with regard to this worklist were released.
Please check if the PO or IBD, either of them have any items blocked in compliance management
If the IBD creation date is used and no other fields are entered, you have a possibility of running into this scenario as well. Do you want to check if this KBA 1457873 holds good for you?
In the event that you have transferred identical PO numbers from different systems, there is a possibility of this scenario. Both these notes 1891468 and 1909443 can be looked too.
Thanks,
Shrini