diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java
index ad862724..9b54612f 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java
@@ -721,7 +721,8 @@ public class ZUGFeRDInvoiceImporter {
 							}
 							if((additionalChilds.item(additionalChildIndex).getLocalName() != null)
 								&& (additionalChilds.item(additionalChildIndex).getLocalName().equals("FormattedIssueDateTime"))) {
-								NodeList FormattedIssueDateTimeChilds = headerTradeAgreementChilds.item(agreementChildIndex).getChildNodes();
+
+								NodeList FormattedIssueDateTimeChilds = additionalChilds.item(additionalChildIndex).getChildNodes();
 								for (int dateChildIndex = 0; dateChildIndex < FormattedIssueDateTimeChilds.getLength(); dateChildIndex++){
 									if((FormattedIssueDateTimeChilds.item(dateChildIndex).getLocalName() != null)
 										&& (FormattedIssueDateTimeChilds.item(dateChildIndex).getLocalName().equals("DateTimeString"))) {
diff --git a/library/src/test/java/org/mustangproject/ZUGFeRD/ZF2ZInvoiceImporterTest.java b/library/src/test/java/org/mustangproject/ZUGFeRD/ZF2ZInvoiceImporterTest.java
index ec744ec8..df10da24 100644
--- a/library/src/test/java/org/mustangproject/ZUGFeRD/ZF2ZInvoiceImporterTest.java
+++ b/library/src/test/java/org/mustangproject/ZUGFeRD/ZF2ZInvoiceImporterTest.java
@@ -20,6 +20,7 @@
  */
 package org.mustangproject.ZUGFeRD;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 import org.junit.jupiter.api.Test;
@@ -178,7 +179,7 @@ public class ZF2ZInvoiceImporterTest extends ResourceCase {
 			hasExceptions = true;
 		}
 		assertFalse(hasExceptions);
-		SimpleDateFormat sdf=new SimpleDateFormat("YYYY-mm-dd");
+		SimpleDateFormat sdf=new SimpleDateFormat("YYYY-MM-dd");
 		// Reading ZUGFeRD
 		assertEquals("4711", invoice.getZFItems()[0].getProduct().getSellerAssignedID());
 		assertEquals("9384", invoice.getSellerOrderReferencedDocumentID());
@@ -188,6 +189,9 @@ public class ZF2ZInvoiceImporterTest extends ResourceCase {
 		assertEquals("recipient@test.org", invoice.getRecipient().getEmail());
 		assertEquals("28934", invoice.getBuyerOrderReferencedDocumentID());
 
+
+
+
 	}