Solution : https://service.sap.com/sap/support/notes/892508 (SAP Service marketplace login required)
Key words :
enter user password, terms sap shortcut, existing language code, unsupported language key, sapshortcut property page, customer language 'z1', language z1, language box, language field, supported language
Related Notes :
| 112065 | Using customer language 'Z1' |