diff --git a/src/main/java/org/mustangproject/ZUGFeRD/VATAmount.java b/src/main/java/org/mustangproject/ZUGFeRD/VATAmount.java
index 408ea69f..817595f6 100644
--- a/src/main/java/org/mustangproject/ZUGFeRD/VATAmount.java
+++ b/src/main/java/org/mustangproject/ZUGFeRD/VATAmount.java
@@ -31,16 +31,16 @@ import java.math.BigDecimal;
  */
 public class VATAmount {
 
-	public VATAmount(BigDecimal basis, BigDecimal calculated, String documentCode) {
+	public VATAmount(BigDecimal basis, BigDecimal calculated, String categoryCode) {
 		super();
 		this.basis = basis;
 		this.calculated = calculated;
-		this.documentCode = documentCode;
+		this.categoryCode = categoryCode;
 	}
 
 	BigDecimal basis, calculated;
 
-	String documentCode;
+	String categoryCode;
 
 	public BigDecimal getBasis() {
 		return basis;
@@ -58,20 +58,38 @@ public class VATAmount {
 		this.calculated = calculated;
 	}
 
+	/**
+	 *
+	 * @deprecated Use {@link #getCategoryCode() instead}
+	 */
+	@Deprecated
 	public String getDocumentCode() {
-		return documentCode;
+		return categoryCode;
 	}
 
+	/**
+	 *
+	 * @deprecated Use {@link #setCategoryCode(String)} instead
+	 */
+	@Deprecated
 	public void setDocumentCode(String documentCode) {
-		this.documentCode = documentCode;
+		this.categoryCode = documentCode;
+	}
+
+	public String getCategoryCode() {
+		return categoryCode;
+	}
+
+	public void setCategoryCode(String categoryCode) {
+		this.categoryCode = categoryCode;
 	}
 
 	public VATAmount add(VATAmount v) {
-		return new VATAmount(basis.add(v.getBasis()), calculated.add(v.getCalculated()), this.documentCode);
+		return new VATAmount(basis.add(v.getBasis()), calculated.add(v.getCalculated()), this.categoryCode);
 	}
 
 	public VATAmount subtract(VATAmount v) {
-		return new VATAmount(basis.subtract(v.getBasis()), calculated.subtract(v.getCalculated()), this.documentCode);
+		return new VATAmount(basis.subtract(v.getBasis()), calculated.subtract(v.getCalculated()), this.categoryCode);
 	}
 
 }
diff --git a/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDTransactionModelConverter.java b/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDTransactionModelConverter.java
index 11b8b45c..206b5a2e 100644
--- a/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDTransactionModelConverter.java
+++ b/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDTransactionModelConverter.java
@@ -167,7 +167,7 @@ class ZUGFeRDTransactionModelConverter {
 		if (trans.getReferenceNumber() != null && !"".equals(trans.getReferenceNumber())) {
 			NoteType referenceInfo = xmlFactory.createNoteType();
 			TextType referenceInfoContent = xmlFactory.createTextType();
-			referenceInfoContent.setValue("Ursprungsbeleg: " + trans.getReferenceNumber());
+			referenceInfoContent.setValue(trans.getReferenceNumber());
 			referenceInfo.getContent().add(referenceInfoContent);
 			document.getIncludedNote().add(referenceInfo);
 		}
@@ -422,7 +422,7 @@ class ZUGFeRDTransactionModelConverter {
 
 			TaxCategoryCodeType taxCategoryCode = xmlFactory.createTaxCategoryCodeType();
 			VATAmount vatAmount = VATPercentAmountMap.get(currentTaxPercent);
-			taxCategoryCode.setValue(vatAmount.getDocumentCode());
+			taxCategoryCode.setValue(vatAmount.getCategoryCode());
 			tradeTax.setCategoryCode(taxCategoryCode);
 
 			VATAmount amount = VATPercentAmountMap.get(currentTaxPercent);
@@ -924,7 +924,7 @@ class ZUGFeRDTransactionModelConverter {
 		for (IZUGFeRDExportableItem currentItem : trans.getZFItems()) {
 			BigDecimal percent = currentItem.getProduct().getVATPercent();
 			LineCalc lc = new LineCalc(currentItem);
-			VATAmount itemVATAmount = new VATAmount(lc.getItemTotalNetAmount(), lc.getItemTotalVATAmount(), trans.getDocumentCode());
+			VATAmount itemVATAmount = new VATAmount(lc.getItemTotalNetAmount(), lc.getItemTotalVATAmount(), lc.getCategoryCode());
 			VATAmount current = hm.get(percent);
 			if (current == null) {
 				hm.put(percent, itemVATAmount);
@@ -958,7 +958,7 @@ class ZUGFeRDTransactionModelConverter {
 				VATAmount itemVATAmount = new VATAmount(
 						logisticsServiceCharge.getTotalAmount(),
 						logisticsServiceCharge.getTotalAmount()
-								.multiply(percent).divide(new BigDecimal(100)), trans.getDocumentCode());
+								.multiply(percent).divide(new BigDecimal(100)), logisticsServiceCharge.getCategoryCode());
 				VATAmount current = hm.get(percent);
 				if (current == null) {
 					hm.put(percent, itemVATAmount);
@@ -973,7 +973,7 @@ class ZUGFeRDTransactionModelConverter {
 				BigDecimal percent = charge.getTaxPercent();
 				VATAmount itemVATAmount = new VATAmount(
 						charge.getTotalAmount(), charge.getTotalAmount()
-						.multiply(percent).divide(new BigDecimal(100)), trans.getDocumentCode());
+						.multiply(percent).divide(new BigDecimal(100)), charge.getCategoryCode());
 				VATAmount current = hm.get(percent);
 				if (current == null) {
 					hm.put(percent, itemVATAmount);
@@ -998,6 +998,7 @@ class ZUGFeRDTransactionModelConverter {
 		private BigDecimal itemTotalNetAmount;
 		private BigDecimal itemTotalVATAmount;
 		private BigDecimal itemNetAmount;
+		private String categoryCode;
 
 
 		public LineCalc(IZUGFeRDExportableItem currentItem) {
@@ -1040,6 +1041,7 @@ class ZUGFeRDTransactionModelConverter {
 					.add(totalCharge)
 					.divide(currentItem.getQuantity(), 4,
 							BigDecimal.ROUND_HALF_UP);
+			categoryCode = currentItem.getCategoryCode();
 		}
 
 
@@ -1057,6 +1059,8 @@ class ZUGFeRDTransactionModelConverter {
 			return itemNetAmount;
 		}
 
+		public String getCategoryCode() { return categoryCode; }
+
 	}
 
 	private class Totals {