SAP Message VF089 - For tax category & classification & is not defined

Diagnosis The specified tax classification &V2& of the material or customer isnot allowed in combination with tax category &V1&. INCLUDE 'NA_NO_PROCESSING_2' OBJECT DOKU ID TX LANGUAGE E INCLUDE 'NA_CHECK_ENTRY' OBJECT DOKU ID TX LANGUAGE E DEFINE &ANLEGEOBJEKT& = 'tax classifications per material/customer' INCLUDE 'NA_CREATE_CHANGE' OBJECT DOKU ID TX LANGUAGE E