SAP Message V1321 - Item category & is not defined for this item

Diagnosis This item category &V1& is not allowed for thisitem. INCLUDE 'NA_NO_PROCESSING_1' OBJECT DOKU ID TX LANGUAGE E INCLUDE 'NA_CHECK_ENTRY' OBJECT DOKU ID TX LANGUAGE E DEFINE &FELDNAME& = 'Item category' INCLUDE 'NA_POSSIBLE_ENTRY' OBJECT DOKU ID TX LANGUAGE E