Hi, We use GATP for product allocation. If we have 2 GRs(posted with 2 sec gap) in sequence for same part, GATP skipped one order in between. Second GR posting should have considered that skipped order. How can I fix this?

Hi,I have 2 + years of experience in SAP XI/PI. Can somebody guide me on how to take certification and also about training materials which i have to refer to?Thanks,Deepa