Solution : https://service.sap.com/sap/support/notes/1456714 (SAP Service marketplace login required)
Key words :
control extened classic scenario option, symptom budget related error messages, check --> budget exceeds error message, budget related error message, purchase order object type, case backend check customizing, error messages related, budget exceeds scenario, check --> error messages, create purchase order
Related Notes :
| 1081758 | FAQ: Budget Check/Display |