Last time I went on holiday to Japan, I bought some souvenirs and took advantage of the Tax-Free exception for tourists. I knew the procedure to follow regarding the paperwork, so as instructed, I planned to leave the Record of Purchase card at the airport before leaving the country. However, once at Narita, due to a set of reasons, I totally forgot about it, and by the time I realised of my mistake, I was mid flight.
All the purchases that I made were legit, and the amount of money that they discounted was minimal (around 2000 yen). My question is: if in the future I go back to Japan, will there be any issue about this when entering/leaving the country (like having to pay a fine or being questioned by customs)?