Solution : https://service.sap.com/sap/support/notes/945855 (SAP Service marketplace login required)
Key words : 
spam/saint update                version 700/0020sap_basis                              sapkb70007sap_aba                                sapka70007database space required, panel tree1023244      reducing dynpro size, external document977665       wrong warning message, drag&drop973589       external document link, minimum support package level required, 0sap_basis   700sap_aba     700required support packages, date         topic        short descriptionfor information, bp-instass add-ontechnical prerequisites, higher support package level, scope976945       missing manual task'
Related Notes : 
       
| 1301301 | Release Strategy for SAP Best Practices Package ABAP Add-ons | 
| 1081936 | Nodes incorrectly display on right panel tree | 
| 1023244 | Reducing dynpro size when opening an external document | 
| 977665 | Wrong warning message when activate a scope | 
| 976945 | Missing Manual Task's Tcode after drag&drop | 
| 973589 | External Document link name is truncated after importing | 
| 962459 | Node incorrectly displays in Scope View on tree | 
| 960372 | Items of context menu causes short dump in CRM system | 
| 960371 | Target system value does not exported out | 
| 822380 | Problems w/ add-on inst/upgrade to SAP NW 7.0 AS ABAP | 
| 822379 | Known problems with Support Packages in SAP NW 7.0x AS ABAP |