Solution : https://service.sap.com/sap/support/notes/1237536 (SAP Service marketplace login required)
Key words :
kpro mass checkout functionality, terms mass checkout, program error solution, relevant support package, special characters, file checked, desktop isdoes, filename requested, utf-8 reason, prerequisites
Related Notes :
| 1330214 | Collective notes for issues with Mass Check-in/Check-out |
| 1072169 | Functionality for multiple file check in and check out |