Since the 2014 edition, Indonesian FA has applied a new restriction as known as "3+1" format, in which at least 1 of 4 foreign players in every club are originated from Asian countries.
Sejak edisi 2014, PSSI telah menerapkan pembatasan baru yang dikenal sebagai format "3+1", dimana setidaknya 1 dari 4 pemain asing di setiap klub yang berasal dari negara-negara Asia.