Thanks Phani,
I have done the full load. First I execute the load in the PSA and later I executed the DTP and in the infocube are the first load.
Now I have changed the DTP to delta and have scheduled the process chain.
In the process chain first I load data in the PSA (infopackage) and the second step is execute the DTP (with delta option) but, once the PC has finished I have data duplicated in the infocube.
Please help?