Solution : https://service.sap.com/sap/support/notes/1642535 (SAP Service marketplace login required)
Key words : 
terms sap netweaver mobile 7, symptom doe core, data orchestration engine, netweaver mobile, queue doe_mass_actgen, import generations, doe_mass_actgen queue, solution apply, oralternatively upgrade, import generation
Related Notes : 
       
| 1640076 | Release Information Note: SPS07 Gateway1.1 to NWMobile 710 | 
| 1622579 | NetWeaver Mobile 7.10 Composite Note for SP13 |