Thanks for your advice, the letter says the description of the work carried out as described in the charts of work did not match with the work according to the 2172 NOC database administrator which is ridiculous because I have over 15 years of working in the same field. The application went from received by the visa office to decision made. What I want to know if I can appeal or how to get the right of permanent residence that I paid for back, I dont think you have to pay for RPR if you got a negative answer.