Solution : https://service.sap.com/sap/support/notes/458409 (SAP Service marketplace login required)
Key words :
terms order type maintenance, order type maintenance, client-specific objects, gd_noact_field-funcarea reason, 'functional area' field, controlling area, display mode, change mode, maintencance interface, customizing data
Related Notes :
| 511923 | Order type:Functional area does not exist |