nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqy98u6vcmvnxz0vt0z6d37827zxwzt7zy3dxzxr60x9sd9awh62mq3vc5n8 (nprofile…c5n8) which remind me i once mistakenly bought the TGV ticket for the following month, i boarded anyway, after we understood the mistake, and they issued me the correct one for the price i had paid, and i reimbursed the wrong one, saving a lot of money compared to if i had bought the correct date 😂. I didn't have a seat and mostly stayed in the wagon-bar, but could have been a lot worse.
I do not advise trying the same though, i certainly got lucky with a very understanding controller.