Solution : https://service.sap.com/sap/support/notes/1391715 (SAP Service marketplace login required)
Key words :
/pe1/db_itemmass activationr/3 core, system issues error message, field <index field>, similar case occurs, enhancement package installation, relevant support package, enhancement package, support package, shadow system, relevant requests
Related Notes :
| 1227270 | Mass activator terminates due to deleted indexes |
| 1098054 | Mass activator terminates due to deleted indexes |
| 822379 | Known problems with Support Packages in SAP NW 7.0x AS ABAP |