Collecting IDOC data into one IDOC

Hi Guru's,

I am looking for a way to collect all IDOC data into 1 big IDOC instead of multiple IDOCS. SO basicly what I want to achieve is that from the SAP side not 300 MATMAS02 IDOCs are send but 1 IDOC MATMAS02 with 300 segments in it.

How can I achieve this. The reason why I am asking is that I want to prevent creating an BMP in SAP PI to collect the IDOCS first.

Hope someone can help.

Best regards,

Guido Koopmann