Solution : https://service.sap.com/sap/support/notes/876909 (SAP Service marketplace login required)
Key words : 
reads 'purchasing organization/invoicing', symptom incorrect en translation, tabt b170 solution, en translation, support package, vkonsoftware component, sap_applobject type, tabtobject hame, einkaufsorg, correction
Related Notes : 
       
| 585116 | Translation after installation of WebAS SP25 | 
| 85012 | Translation guidelines for Releases 3.1H - 4.0B |