Solution : https://service.sap.com/sap/support/notes/704467 (SAP Service marketplace login required)
Key words : 
maintained subscreen 020 - 'basic dates', attached source code corrections, prerequisitethe current notification tab, symptom field 'planning plant', prerequisites causethis problem, pm/cs order, sales order data, qmih-iwerk reason, pm/cs notification, planning plant
Related Notes : 
       
| 829094 | PM/CS notifications with inconsistent Data | 
| 828901 | Revision number in notification lists cannot be displayed |