2844132 - The field "G/L" is greyed out in app Create Incoming Invoices and Create Supplier Invoice

In app Create Incoming Invoices and Create Supplier Invoice, the field "G/L" is greyed out and can not be changed.

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."

SAP S/4HANA Cloud Public Edition

g/l account, greyed out, can not change g/l account, Create Incoming Invoices, FB60, Reconciliation Acct, SSCUI 102631, Define Alternative Reconciliation Accounts, Rec.Act Ready, RECN, ReconAcct, SSCUI 150001, Manage G/L Account Master Data, Create Supplier Invoice, MIRO , KBA , FI-FIO-AP-2CL , Fiori UI for Accounts Payable (Public Cloud) , MM-FIO-IV-2CL , Fiori UI for Invoice Verification (Public Cloud) , How To