Solution : https://service.sap.com/sap/support/notes/928082 (SAP Service marketplace login required)
Key words :
'utilities -> convert class-local types' menu option, incorrect account determination, if_jbr_soft_modifications~is_active method, error log lists, posting log displays, single error occurs, alternative system response, execute transaction tpm18, posted business transactions, zcl_soft_modifications_cust class
Related Notes :
| 830204 | Conversion of class-local types in customer system |