CCR Report with Error Code 189

When I run /SAPAPO/CCR Report and when check the comparison for Purchase Requests Difference, I get a big list of PRs in this report with error code 189 which says "APO requirement quantity (0.000) different to R/3 req. quantity (10.00)" This I have taken for one of the PRs for which the Qty is 10. I checked in MD04 for this material and there exists one PR for 10No. and the same PR is also exists in APO Product View.

Why I am getting this false message.