Solution : https://service.sap.com/sap/support/notes/628911 (SAP Service marketplace login required)
Key words :
include parameter cdesk_dost_with_ecm set, engineering change management, change number, cad-desktop, document structures, terms cdesk, cad desktop, document structure, cdesk_cus reason, program error
Related Notes :
918545 | CDESK: Deactivating default behavior for change number |
773237 | CDESK: Create document structure with change number (2) |
771557 | CDESK: Creation of document BOM with change number |