Upload & Maintain price conditions

Dear Gurus,

I need to create a program to upload and maintain different condition prices, some of the with scales.

LSMW is not an option.

Acording to OSS note 1135984 there are only two posibilities

1- Use the standar report RV14BTCI. The idea that I have for this is create a Z-program to read the file from local drive and then save into the server folder and submit RV14BTCI.

2 - IDoc message type COND_A. I have no idea how to implement the Idoc in a Z-program.

From my point of view, the IDoc solution is more powerful and flexible but I don't know how to use it in a Z-program and what I should customize for that.

I would like to ask you different things

1- Your experience and advices about to upload prices conditions

2- How to use the IDoc in a program.

Thank you very much,

Manuel