SAP Message VK013 - Distribution channel & is not defined

Diagnosis
Distribution channel &V1& is not allowed.
INCLUDE 'NA_NO_PROCESSING_3' OBJECT DOKU ID TX LANGUAGE E
INCLUDE 'NA_CHECK_ENTRY' OBJECT DOKU ID TX LANGUAGE E
DEFINE &FELDNAME& = 'distribution channel'
INCLUDE 'NA_POSSIBLE_ENTRY_2' OBJECT DOKU ID TX LANGUAGE E
DEFINE &ANLEGEOBJEKT& = 'distribution channels'
INCLUDE 'NA_CREATE_CHANGE' OBJECT DOKU ID TX LANGUAGE E