Thanks to erpprep I could score 100% in sap pp certification exam. My certification code was C_TSCM42_66. Erpprep helped me to get an insight of scenerio based questions which helped me crack the exam with lots of confidence. I highly recommend erpprep for production planning certification. A big salute to erpprep. I did total 30 sets and I recommend everyone to take the full test until you get 100% atleast thrice. But please keep in mind that you should have a deep sense of the knowledge materials provided by SAP before starting to take the tests. Keep repeating even if you get 100% in the first attempt for gaining immense confidence, surely the effort won't go wasted. After around 6 sets, the questions will repeat but never mind. Keep focussing and keep practising. All the best!