FIELD Firma LIKE BonSumm.Firma VALIDATE ~
  FIELD Bon_Summ LIKE BonSumm.Bon_Summ VALIDATE ~
  FIELD Menge LIKE BonSumm.Menge VALIDATE ~
  FIELD Betrag LIKE BonSumm.Betrag VALIDATE ~
  FIELD Inhalt LIKE BonSumm.Inhalt VALIDATE ~
  FIELD Bez LIKE BonSumm.Bez VALIDATE ~
  FIELD Bon_Art LIKE BonSumm.Bon_Art VALIDATE ~
  FIELD Bon_Wert LIKE BonSumm.Bon_Wert VALIDATE