File split and correlation in BPM

Hi,

I have a large file from the sender FTP which I am splitting by using 'recordsets per message' in the file adapter.

Now I want all the split files to enter the same BPM.

I have designed the BPM logic by using the correlation in the receive step. Still I am seeing that the each split message from the same file is entering into a separate BPM.

How can we monitor whether the correlation is actibve? What could be the other options to check?

KIndly help.

Thanks,

John.