Solution : https://service.sap.com/sap/support/notes/515069 (SAP Service marketplace login required)
Key words :
minimum support package level, setting report parameter force, migration reports online contrary, support package level, parameter force initial, message number crm_suite201, migration reports explicitly, single survey definition, existing active survey, insert additional surveys
Related Notes :
525492 | SAP CRM 3.1: Information on Upgrade |