Solution : https://service.sap.com/sap/support/notes/552910 (SAP Service marketplace login required)
Key words : 
/3 standard human resource 40b sapke40b44 solution copy, 40b sapkh40b44 45b sapkh45b23, scheduling agreement schedule line, reference normal requests, /3 standard system, schedule line, scheduling agreements, statistical data, mcvbel-vsmng_l, mcvbel-vswrt_l
Related Notes : 
       
| 174134 | SIS: Collective note - reorganization | 
| 158357 | Deliveries: GETWA_NOT_ASSIGNED, OLFMNG not filled |