How to track the Inbound child IDOcs in PI 7.4 Single stack

Hi Friends,

I would like to know the procedure of tracking the Inbound child IDocs in PI 7.4 Single stack.

Here is the detailed description.

Say we are getting the data from third party system and the message may have multiple IDOcs in it. The message has processed successfully from PI and reached to the target system(ERP). So, now my question is how to track the IDOc count with in that message.

Please suggest on the same.

Thanks in Advance,

Venkateswarlu.