Solution : https://service.sap.com/sap/support/notes/1262931 (SAP Service marketplace login required)
Key words :
prerequisites perform set_checkout_file_name returns incorrect file path due, routine 'set_checkout_file_name' returns wrong filename, symptom mass checkin fails, terms routine 'set_checkout_file_name_mass', mass checkin, set_checkout_file_name, solution set_checkout_file_name_mass, incompatible types, changing parameters, bapi_doc_mass_change2 reason
Related Notes :
| 1329158 | Collective notes for issues with Mass Check-in/Check -out |