Solution : https://service.sap.com/sap/support/notes/749693 (SAP Service marketplace login required)
Key words :
type /1crmg0/notifn_write optionalafter making, type /1crmg0/notifn_write optionalfor, /3 sendsthe notification bdoc back, duplicate longtext records, function module crm_upload_mca_dnotifn_srv, changedin mobile service, terms mobile service, service notification - task, function module crm_upload_mca_dnotifn_pack, mobile service client
Related Notes :
752195 | User Exits for Mobile Service R/3 Edition |