Thanks for your answer and for recommended links. But I´m still confused with that question. I´ve already performed all my analysis but I want to be sure I did all the process in the correct way.
In the threads they talked about denoising using qiime. In my case, I did the denoising step using Acacia prior the split library. Once I ran the split_libraries command I used the mapping file without to include the reverse primer. I used the barcode and the forward primer. And that mapping file is the one I´ve used for the other commands used.
I don´t really think it makes any difference, in my case, the mapping file with or without specifying the reverse primer sequence, but I just want to be sure about that question.