Solution : https://service.sap.com/sap/support/notes/29011 (SAP Service marketplace login required)
Key words : 
additional key words availability check, prerequisites availability check, solution program correction, availability check, cumulative quantities, creation mode, change mode, 'cum' field, selected option, summarized requirements
Related Notes : 
       
| 29013 | Notes for 'Online vs. Batch' advance correction |