Intercompany Reconciliation process 003 - Sender Ledger

Hi Gurus,

I am trying to set up configuration for IC reconciliation process. In the step define reconciliation process attributes, do I have to mention any sender ledger for ICR process 003? I read that the sender ledger field is not mandatory for ICR process 003. If we leave this field empty the reconciliation program will consider entries from BKPF and BSEG tables.

My current client has reconciliation system same as sender system. There is a productive company code running on the same client of the same system.

Currently there are two ledgers defined ZA and ZB.

ZA - named as FI ledger and

ZB - named as SPL reporting ledger.

Questions:

1./ In the ICR configuration, Do I have to mention one of the current ledgers (ZA or ZB) in the sender ledger field in the configuration? If so what will be the impact?

2./ Can I leave the sender ledger field blank in the configuration? If so, what will be the impact.

I am trying to read through the documentation in SAP notes (1172591 and 863630) but I am unclear of what is needed to be configured in this field.

Any feedback will be appreciated. Thanks in advance.

Best Regards

Ram