Solution : https://service.sap.com/sap/support/notes/519229 (SAP Service marketplace login required)
Key words :
event handler control table crmc_event_call, schedlin_ievent after_change_order_qtyattribute < >function crm_prepare_contract_search_ecperform function, schedlin_ievent after_change_order_qtyattribute < >function crm_search_sales_contracts_ecperform function, type/obj/event, event error occurs, dialog box inwhich, attached program corrections, call transaction crmv_event, noperform function, process function
Related Notes :
507237 | SAPKU30009: Support Package 9 for EBP 3.0/CRM 3.0 |