Solution : https://service.sap.com/sap/support/notes/370293 (SAP Service marketplace login required)
Key words :
additional key words vf11, runtime error convt_no_number occurs, cancel billing documents, support package- sapkh46b24, program saplv60a, program lv60ad07, short dump, attached correction, implement note 360487, convt_no_number
Related Notes :
375613 | Billing document can be cancelled more than once |
360487 | Cancellation individual items: entire FI-document cancelled |
147149 | Collective note : Item reversal |