Solution : https://service.sap.com/sap/support/notes/1225884 (SAP Service marketplace login required)
Key words :
symptom error message dno 123, call transaction se91, message class dno, dno 123 reason, missing message, message number 123, support package, terms dno123, solution add, change mode
Related Notes :
| 1080131 | Check on attachments and file types |
| 1023598 | SAP Solution Manager Service Desk for service providers |