From 7ed7533079d602957667954d56ec9586bcdfb00f Mon Sep 17 00:00:00 2001
From: Kojo <kojo.bauer@ownsoft.de>
Date: Fri, 11 Jul 2025 10:13:47 +0200
Subject: [PATCH] Nous: NPE vermeiden, wenn Preis einer Rechnungsposition nicht
 gesetzt ist

---
 ReportImp/Nous/Invoicing/DefaultInvoiceCreation.cs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/ReportImp/Nous/Invoicing/DefaultInvoiceCreation.cs b/ReportImp/Nous/Invoicing/DefaultInvoiceCreation.cs
index e279147f7..7665c1a77 100644
--- a/ReportImp/Nous/Invoicing/DefaultInvoiceCreation.cs
+++ b/ReportImp/Nous/Invoicing/DefaultInvoiceCreation.cs
@@ -204,7 +204,13 @@ namespace Nous.Invoicing
 		
 		public override string GetSummaryItemKey(SupportConceptApprovalPeriod scap, InvoiceItem iitem, bool summaryPerMonth)
 		{
-			String key = String.Format("{0}_{1}_{2}", Convert.ToDecimal(Math.Round(iitem.AmountPerUnit.Value, 2)), iitem.RateFactor, iitem.ItemDescription);
+			decimal? preis = null;
+			if (iitem.AmountPerUnit != null)
+			{
+				preis = Convert.ToDecimal(Math.Round(iitem.AmountPerUnit.Value, 2));
+			}
+
+			String key = String.Format("{0}_{1}_{2}", preis, iitem.RateFactor, iitem.ItemDescription);
 			if (summaryPerMonth)
 			{
 				key = String.Format("{0}_{1}_{2:yyyyMM}", iitem.AmountPerUnit, iitem.RateFactor, iitem.ItemPeriodStart);
@@ -212,7 +218,5 @@ namespace Nous.Invoicing
 
 			return key;
 		}
-
-
 	}
 }