In the App Post with Clearing, the bank data (House Bank and account ID) does not come populated even if they are defined in the G/L Account Master data.
SAP S/4HANA Cloud
The bank data (House bank and Account ID) are not automatically derived from the G/L master data record due to a system limitation.
Insert the information of the House Bank and Account ID manually. You can use the click in the search option (F4-help) for selecting the required bank data.
FB05, FB04, House Bank, Bank data, Account ID, Post with Clearing, FIORI, FIORI Apps, App, Apps , KBA , FI-FIO-AR , Fiori UI for Accounts Receivable , FI-AR-AR-A , Posting/Clearing/Special General Ledger , FI-AP-AP-A , Posting/Clearing/Special General Ledger , How To