Hi Brathap,
Yes, according with Bittor Fernandez, only FB01L and FB01L can post in differents ledgers groups. If you want to post in the ledger specific, please assing this ledger to a group, i.e:
0L - Leadind ledger - Assign to a ledger group A;
1L - Non leading ledger - Assign to ledger group B;
When you post by i.e FB50, you'll use fill with the ledger that you want. Remember that you don't fill ledger group, all ledgers are posted, like in the F-43 or FB01.
JPA