From 43699206ac5b7a7786b2f558fb612528076e90b7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jochen=20St=C3=A4rk?= <jstaerk@usegroup.de>
Date: Thu, 11 Dec 2025 14:23:38 +0100
Subject: [PATCH] closes #983

---
 History.md                                            | 2 ++
 library/src/main/java/org/mustangproject/Invoice.java | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/History.md b/History.md
index dd00de12..1636a1c5 100644
--- a/History.md
+++ b/History.md
@@ -2,6 +2,8 @@
 - #954
 - #947
 - #969
+- #984
+- #983
 
 2.20.0
 =======
diff --git a/library/src/main/java/org/mustangproject/Invoice.java b/library/src/main/java/org/mustangproject/Invoice.java
index 9f0b4208..0358abe9 100644
--- a/library/src/main/java/org/mustangproject/Invoice.java
+++ b/library/src/main/java/org/mustangproject/Invoice.java
@@ -194,6 +194,12 @@ public class Invoice implements IExportableTransaction {
 	}
 
 	public Invoice setCreditNote() {
+		documentCode = DocumentCodeTypeConstants.CREDITNOTE; // this value should somewhen be changed to Selfbilling
+		return this;
+	}
+
+	public Invoice setCreditNote(String number) {
+		setInvoiceReferencedDocumentID(number);
 		documentCode = DocumentCodeTypeConstants.CREDITNOTE;
 		return this;
 	}