Solution : https://service.sap.com/sap/support/notes/306966 (SAP Service marketplace login required)
Key words :
include customer-specific fields, distinguishing customer-specific fields, additional key words omsr, choose 'extras -> maintenance status, check box 'maintenance namespace', generate table maintenance dialog, press button 'create/change', choose 'environment -> events', choose button 'change', tab page 'maint
Related Notes :
| 210101 | SE16 and maintenance views |
| 44410 | Integrating cust.-specific fields in matl master |