Thank you Ashutosh Joshi I found it in some SCN posts but I read they had some problems to use this BAPI.
Have you tried this BAPI, Archana Pawar?
I'm afraid to try BDC because they had many different kind of situations to fill the informations in C201 (and to be honest, the functional doesn't know most of them...).
They have a "fantastic" idea to import this data from Excel... Kind of 1.000 receipts...