Error message CK426 in KO88 transaction

sap ko88 You can not use KO88 for mass processing, either need to create a variant to make a collective processing or use you mean to say you want to use only

Financial Accounting ; SAP R3; SAP R3 Enterprise ; SAP ERP Central Component; SAP ERP; SAP enhancement package for SAP ERP; SAP enhancement package วิธีสมัครsapp888 TCode is KO88, which provides access to Actual Settlement: Order Settlement: Main program SAP screen functionality within R3 SAP systems