Cannot select ledger when processing "Create Accounting" for LA

Hi Team
When processing "Create Accounting", cannot select ledger which already has lease created in the related BU.

We have other BU-Ledger that has same DAS and setting, which Ledger when processing create accounting is selectable.
But this one Ledger which already has lease created in related BU, cant be selected when processing create accounting.
We have checked the setting and checked that BU had relation between the Ledger we cannot see in create accounting.

Appreciate your help.

Thanks,