Solution : https://service.sap.com/sap/support/notes/206568 (SAP Service marketplace login required)
Key words :
find open time slots' selection screen, receive message n4001 'org, additional key words nr14, open time slots, source code repair, departmental ou, 'visit scheduling, check entry, organizational unit, program variable
Related Notes :
153153 | IS-H: Composite note on important errors in 4.03A |