Solution : https://service.sap.com/sap/support/notes/126876 (SAP Service marketplace login required)
Key words :
mass document change additional key words afs, prerequisites mass document change selects open, mass document change, open sales orders, /open sales orders, symptom separate selection, thismixture cann couse, /open orders, unpleasent consequences
Related Notes :
136447 | Requirement Category not chananged via J4AM |
125799 | Mass document change runs only for open orders |