I think that if you do everything by the numbers you will not face any problem with TRA.You need to read and read again what they need so you can understand completelly the prerequisites for success.On the other hand ,each country has it's own system of education ,licensing etc. so you need to improvise a litle bit.Personaly ,I made a list of documents explaining what each document represented.I also took pics of my self while working ,I printed them on A4 and acompanied it also with a list explaining what each pic was showing.So ,I believe I left no margin in false claiming of my occupation.Generally speaking the more for the TRA (since they love detail ) the better. Still ,first time I initially submited my application ,I made a childish mistake wich led to have my whole application returned to me by snail-mail.