attempts on supporting netherlands' Euro

library/src/main/java/org/mustangproject/Invoice.java

@@ -66,6 +66,7 @@ public class Invoice implements IExportableTransaction {
 	protected String despatchAdviceReferencedDocumentID = null;
 	protected String vatDueDateTypeCode = null;
 	protected String creditorReferenceID; // required when direct debit is used.
+	private BigDecimal roundingAmount=null;
 
 	public Invoice() {
 		ZFItems = new ArrayList<>();
@@ -467,6 +468,24 @@ public class Invoice implements IExportableTransaction {
 		return sender;
 	}
 
+	/***
+	 * for currency rounding differences to 5ct e.g. in Netherlands ("Rappenrundung")
+	 * @return null if not set, otherwise BigDecimal of Euros
+	 */
+	@Override
+	public BigDecimal getRoundingAmount() {
+		return roundingAmount;
+	}
+
+	/***
+	 * for currency rounding differences to 5ct e.g. in Netherlands ("Rappenrundung")
+	 * @return fluent setter
+	 */
+	public Invoice setRoundingAmount(BigDecimal amount) {
+		 roundingAmount=amount;
+		 return this;
+	}
+
 	/***
 	 * sets a named sender contact
 	 * @deprecated use setSender

library/src/main/java/org/mustangproject/ZUGFeRD/IExportableTransaction.java

@@ -321,6 +321,15 @@ public interface IExportableTransaction {
 		return false;
 	}
 
+	/**
+	 * supplier identification assigned by the costumer
+	 *
+	 * @return the sender's identification
+	 */
+	default BigDecimal getRoundingAmount() {
+		return null;
+	}
+
 	/**
 	 * get reference document number typically used for Invoice Corrections Will be
 	 * added as IncludedNote in comfort profile

library/src/main/java/org/mustangproject/ZUGFeRD/TransactionCalculator.java

@@ -46,9 +46,9 @@ public class TransactionCalculator implements IAbsoluteValueProvider {
 	 */
 	public BigDecimal getGrandTotal() {
 
-		final BigDecimal res = getTaxBasis();
+		BigDecimal basis = getTaxBasis();
 		return getVATPercentAmountMap().values().stream().map(VATAmount::getCalculated)
-				.map(p -> p.setScale(2, RoundingMode.HALF_UP)).reduce(BigDecimal.ZERO, BigDecimal::add).add(res);
+			.map(p -> p.setScale(2, RoundingMode.HALF_UP)).reduce(BigDecimal.ZERO, BigDecimal::add).add(basis);
 	}
 
 	/***
@@ -172,8 +172,8 @@ public class TransactionCalculator implements IAbsoluteValueProvider {
 				LineCalculator lc = new LineCalculator(currentItem);
 				VATAmount itemVATAmount = new VATAmount(lc.getItemTotalNetAmount(), lc.getItemTotalVATAmount(),
 					currentItem.getProduct().getTaxCategoryCode(), vatDueDateTypeCode);
-				String reasonText=currentItem.getProduct().getTaxExemptionReason();
+				String reasonText = currentItem.getProduct().getTaxExemptionReason();
-				if (reasonText!=null) {
+				if (reasonText != null) {
 					itemVATAmount.setVatExemptionReasonText(reasonText);
 				}
 				VATAmount current = hm.get(percent.stripTrailingZeros());
@@ -239,4 +239,11 @@ public class TransactionCalculator implements IAbsoluteValueProvider {
 		return getAllowancesForPercent(null).setScale(2, RoundingMode.HALF_UP);
 	}
 
+	public BigDecimal getDuePayable() {
+		BigDecimal res = getGrandTotal().subtract(getTotalPrepaid());
+		if (trans.getRoundingAmount() != null) {
+			res = res.add(trans.getRoundingAmount());
+		}
+		return res;
+	}
 }

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java

@@ -334,7 +334,7 @@ public class ZUGFeRD2PullProvider implements IXMLProvider {
 		this.trans = trans;
 		this.calc = new TransactionCalculator(trans);
 
-		boolean hasDueDate = trans.getDueDate()!=null;
+		boolean hasDueDate = trans.getDueDate() != null;
 		final SimpleDateFormat germanDateFormat = new SimpleDateFormat("dd.MM.yyyy");
 
 		String exemptionReason = "";
@@ -856,7 +856,7 @@ public class ZUGFeRD2PullProvider implements IXMLProvider {
 		final String chargesTotalLine = "<ram:ChargeTotalAmount>" + currencyFormat(calc.getChargesForPercent(null)) + "</ram:ChargeTotalAmount>";
 
 		xml += "<ram:SpecifiedTradeSettlementHeaderMonetarySummation>";
-		if (getProfile() != Profiles.getByName("Minimum")) {
+		if ((getProfile() != Profiles.getByName("Minimum")) && (getProfile() != Profiles.getByName("BASICWL"))) {
 			xml += "<ram:LineTotalAmount>" + currencyFormat(calc.getTotal()) + "</ram:LineTotalAmount>";
 			xml += chargesTotalLine
 				+ allowanceTotalLine;
@@ -865,14 +865,18 @@ public class ZUGFeRD2PullProvider implements IXMLProvider {
 			// //
 			// currencyID=\"EUR\"
 			+ "<ram:TaxTotalAmount currencyID=\"" + trans.getCurrency() + "\">"
-			+ currencyFormat(calc.getGrandTotal().subtract(calc.getTaxBasis())) + "</ram:TaxTotalAmount>"
+			+ currencyFormat(calc.getGrandTotal().subtract(calc.getTaxBasis())) + "</ram:TaxTotalAmount>";
-			+ "<ram:GrandTotalAmount>" + currencyFormat(calc.getGrandTotal()) + "</ram:GrandTotalAmount>";
+		if (trans.getRoundingAmount() != null) {
+			xml += "<ram:RoundingAmount>" + currencyFormat(trans.getRoundingAmount()) + "</ram:RoundingAmount>";
+		}
+
+		xml += "<ram:GrandTotalAmount>" + currencyFormat(calc.getGrandTotal()) + "</ram:GrandTotalAmount>";
 		// //
 		// currencyID=\"EUR\"
 		if (getProfile() != Profiles.getByName("Minimum")) {
 			xml += "<ram:TotalPrepaidAmount>" + currencyFormat(calc.getTotalPrepaid()) + "</ram:TotalPrepaidAmount>";
 		}
-		xml += "<ram:DuePayableAmount>" + currencyFormat(calc.getGrandTotal().subtract(calc.getTotalPrepaid())) + "</ram:DuePayableAmount>"
+		xml += "<ram:DuePayableAmount>" + currencyFormat(calc.getDuePayable()) + "</ram:DuePayableAmount>"
 			+ "</ram:SpecifiedTradeSettlementHeaderMonetarySummation>";
 		if (trans.getInvoiceReferencedDocumentID() != null) {
 			xml += "<ram:InvoiceReferencedDocument>"

library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java

@@ -621,6 +621,11 @@ public class ZUGFeRDInvoiceImporter {
 
 		zpp.setOwnOrganisationName(extractString("//*[local-name()=\"SellerTradeParty\"]/*[local-name()=\"Name\"]|//*[local-name()=\"AccountingSupplierParty\"]/*[local-name()=\"Party\"]/*[local-name()=\"PartyName\"]").trim());
 
+		String rounding=extractString("//*[local-name()=\"SpecifiedTradeSettlementHeaderMonetarySummation\"]/*[local-name()=\"RoundingAmount\"]|//*[local-name()=\"LegalMonetaryTotal\"]/*[local-name()=\"Party\"]/*[local-name()=\"PayableRoundingAmount\"]");
+		if ((rounding!=null)&&(!rounding.isEmpty())) {
+			zpp.setRoundingAmount(new BigDecimal(rounding.trim()));
+		}
+
 		xpr = xpath.compile("//*[local-name()=\"BuyerReference\"]");
 		String buyerReference = null;
 		prepaidNodes = (NodeList) xpr.evaluate(getDocument(), XPathConstants.NODESET);

library/src/test/java/org/mustangproject/ZUGFeRD/ZF2PushTest.java

@@ -88,6 +88,7 @@ public class ZF2PushTest extends TestCase {
 				.addItem(new Item(new Product("Design (hours)", "Of a sample invoice", "HUR", new BigDecimal(7)), price, new BigDecimal(1.0)))
 				.addItem(new Item(new Product("Ballons", "various colors, ~2000ml", "H87", new BigDecimal(19)), new BigDecimal("0.79"), new BigDecimal(400.0)))
 				.addItem(new Item(new Product("Hot air „heiße Luft“ (litres)", "", "LTR", new BigDecimal(19)), new BigDecimal("0.025"), new BigDecimal(800.0)))
+				.setRoundingAmount(new BigDecimal("1"))
 			);
 
 			ze.export(TARGET_PDF);
@@ -95,6 +96,15 @@ public class ZF2PushTest extends TestCase {
 			fail("Exception should not be raised");
 		}
 
+ZUGFeRDInvoiceImporter zii=new ZUGFeRDInvoiceImporter(TARGET_PDF);
+		Invoice i=new Invoice();
+		try {
+			zii.extractInto(i);
+		} catch (XPathExpressionException e) {
+			throw new RuntimeException(e);
+		} catch (ParseException e) {
+			throw new RuntimeException(e);
+		}
 
 
 		// now check the contents (like MustangReaderTest)