diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/IZUGFeRDExportableItem.java b/library/src/main/java/org/mustangproject/ZUGFeRD/IZUGFeRDExportableItem.java
index 3c20e519..e5e25cae 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/IZUGFeRDExportableItem.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/IZUGFeRDExportableItem.java
@@ -90,6 +90,16 @@ public interface IZUGFeRDExportableItem extends IAbsoluteValueProvider{
 		return BigDecimal.ONE.setScale(4);
 	}
 
+	/***
+	 * the ID of an additionally referenced document for this item
+	 * @deprecated use {@link #getAdditionalReferences()} instead.
+	 * @return the id as string
+	 */
+	@Deprecated
+	default String getAdditionalReferencedDocumentID() {
+		return null;
+	}
+
 	/***
 	 * allows to specify multiple references (billing information)
 	 * @return the referenced documents
diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD1PullProvider.java b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD1PullProvider.java
index 0b028806..b98abebc 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD1PullProvider.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD1PullProvider.java
@@ -389,7 +389,8 @@ public class ZUGFeRD1PullProvider extends ZUGFeRD2PullProvider {
 					+ "</ram:SpecifiedTradeSettlementMonetarySummation>";
 			if (currentItem.getAdditionalReferences() != null) {
 				xml += "<ram:AdditionalReferencedDocument><ram:ID>" + currentItem.getAdditionalReferences()[0].getIssuerAssignedID() + "</ram:ID><ram:TypeCode>130</ram:TypeCode></ram:AdditionalReferencedDocument>";
-
+			} else if (currentItem.getAdditionalReferencedDocumentID() != null) {
+				xml += "<ram:AdditionalReferencedDocument><ram:ID>" + currentItem.getAdditionalReferencedDocumentID() + "</ram:ID><ram:TypeCode>130</ram:TypeCode></ram:AdditionalReferencedDocument>";
 			}
 			xml += "</ram:SpecifiedSupplyChainTradeSettlement>"
 					+ "<ram:SpecifiedTradeProduct>";
diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java
index bbadfdae..eaefecaa 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRD2PullProvider.java
@@ -511,6 +511,8 @@ public class ZUGFeRD2PullProvider implements IXMLProvider {
 							"<ram:ReferenceTypeCode>" + XMLTools.encodeXML(currentReference.getReferenceTypeCode()) + "</ram:ReferenceTypeCode>" +
 							"</ram:AdditionalReferencedDocument>";
 					}
+				} else if (currentItem.getAdditionalReferencedDocumentID() != null) {
+					xml += "<ram:AdditionalReferencedDocument><ram:IssuerAssignedID>" + currentItem.getAdditionalReferencedDocumentID() + "</ram:IssuerAssignedID><ram:TypeCode>130</ram:TypeCode></ram:AdditionalReferencedDocument>";
 				}
 				xml += "</ram:SpecifiedLineTradeSettlement>"
 					+ "</ram:IncludedSupplyChainTradeLineItem>";