disable "Ledger Group" in FBB1

Hi,

I've performed the t code FAGLF101 for Accounts Payable, using the Sort Method "SAP". Using this sort method, the batch input session that is created gets the Ledger Group as "0L", which is the default ledger.

In my case, I won't post anything in this ledger, so I need one way to make the postings left this field as blank. Is there some way to disable this "Ledger Group" field in FBB1, so it won't be required?

Thanks in advance.