Why ledger "0L" is automatically proposed in fiori's "GL Account Balance Inquiry" tile?

Hi all!
Why ledger "0L" is automatically proposed in fiori's "GL Account Balance Inquiry" tile?

I don't understand why ledger "0L" is automatically selected in the "GL Account Balance Inquiry" tile of SAP Fiori.

When I checked, I presume that the previous input value is not automatically proposed, but is automatically proposed
because something is set in SAP, or it is automatically set because it is a reading ledger.

Please let me know.

Any info is welcome. Please help!!!

Thanks.

Rentaro.