From b988ab7ff2e22da3544a58fd95b1a13b10c41b0a Mon Sep 17 00:00:00 2001
From: Eryk Gajos <gajos@cbl-computer.de>
Date: Fri, 12 Sep 2025 13:06:21 +0200
Subject: [PATCH 1/2] - Added new field

---
 ZUGFeRD/AbstractTradeAllowanceCharge.cs |  5 +++++
 ZUGFeRD/InvoiceDescriptor22UblReader.cs |  7 +++++--
 ZUGFeRD/TradeLineItem.cs                | 10 ++++++----
 3 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/ZUGFeRD/AbstractTradeAllowanceCharge.cs b/ZUGFeRD/AbstractTradeAllowanceCharge.cs
index c25d5d32..f4b42fc7 100644
--- a/ZUGFeRD/AbstractTradeAllowanceCharge.cs
+++ b/ZUGFeRD/AbstractTradeAllowanceCharge.cs
@@ -79,5 +79,10 @@ public abstract class AbstractTradeAllowanceCharge : Charge
         /// BT-101
         /// </summary>
         public decimal? ChargePercentage { get; internal set; }
+
+        /// <summary>
+        /// Surcharges/discounts at invoice level - percentage rate
+        /// </summary>
+        public decimal? MultiplierFactor { get; internal set; }
     }
 }
diff --git a/ZUGFeRD/InvoiceDescriptor22UblReader.cs b/ZUGFeRD/InvoiceDescriptor22UblReader.cs
index 084a0fe8..de2d1368 100644
--- a/ZUGFeRD/InvoiceDescriptor22UblReader.cs
+++ b/ZUGFeRD/InvoiceDescriptor22UblReader.cs
@@ -676,6 +676,7 @@ private static List<TradeLineItem> _parseTradeLineItem(XmlNode tradeLineItem, Xm
                 string actualAmountCurrency = XmlUtils.NodeAsString(appliedTradeAllowanceChargeNode, "./cbc:Amount/@currencyID", nsmgr);
                 string reason = XmlUtils.NodeAsString(appliedTradeAllowanceChargeNode, "./cbc:AllowanceChargeReason", nsmgr);
                 string reasonCode = XmlUtils.NodeAsString(appliedTradeAllowanceChargeNode, "./cbc:AllowanceChargeReasonCode", nsmgr);
+                decimal? multiplierFactor = XmlUtils.NodeAsDecimal(appliedTradeAllowanceChargeNode, "./cbc:MultiplierFactorNumeric", nsmgr);                
 
                 if (chargeIndicator) // charge
                 {
@@ -683,7 +684,8 @@ private static List<TradeLineItem> _parseTradeLineItem(XmlNode tradeLineItem, Xm
                                         basisAmount,
                                         actualAmount,
                                         reason,
-                                        EnumExtensions.StringToEnum<ChargeReasonCodes>(reasonCode));
+                                        EnumExtensions.StringToEnum<ChargeReasonCodes>(reasonCode),
+                                        multiplierFactor);
                 }
                 else // allowance
                 {
@@ -691,7 +693,8 @@ private static List<TradeLineItem> _parseTradeLineItem(XmlNode tradeLineItem, Xm
                                            basisAmount,
                                            actualAmount,
                                            reason,
-                                           EnumExtensions.StringToEnum<AllowanceReasonCodes>(reasonCode));
+                                           EnumExtensions.StringToEnum<AllowanceReasonCodes>(reasonCode),
+                                           multiplierFactor);
                 }
             }
 
diff --git a/ZUGFeRD/TradeLineItem.cs b/ZUGFeRD/TradeLineItem.cs
index 69503c8d..197b3f91 100644
--- a/ZUGFeRD/TradeLineItem.cs
+++ b/ZUGFeRD/TradeLineItem.cs
@@ -334,7 +334,7 @@ public TradeLineItem(string lineId)
         /// <param name="reason">Reason for the allowance </param>
         /// <param name="reasonCode">Reason code for the allowance</param>
         public TradeLineItem AddTradeAllowance(CurrencyCodes currency, decimal? basisAmount, decimal actualAmount,
-                                               string reason, AllowanceReasonCodes? reasonCode = null)
+                                               string reason, AllowanceReasonCodes? reasonCode = null, decimal? multiplierFactor = null)
         {
             this.TradeAllowanceCharges.Add(new TradeAllowance()
             {
@@ -342,7 +342,8 @@ public TradeLineItem AddTradeAllowance(CurrencyCodes currency, decimal? basisAmo
                 ActualAmount = actualAmount,
                 BasisAmount = basisAmount,
                 Reason = reason,
-                ReasonCode = reasonCode
+                ReasonCode = reasonCode,
+                MultiplierFactor = multiplierFactor
             });
             return this;
         } // !AddTradeAllowance()
@@ -359,7 +360,7 @@ public TradeLineItem AddTradeAllowance(CurrencyCodes currency, decimal? basisAmo
         /// <param name="reason">Reason for the surcharge</param>
         /// <param name="reasonCode">Optional reason code for the surcharge</param>
         public TradeLineItem AddTradeCharge(CurrencyCodes currency, decimal? basisAmount, decimal actualAmount,
-                                            string reason, ChargeReasonCodes? reasonCode = null)
+                                            string reason, ChargeReasonCodes? reasonCode = null, decimal? multiplierFactor = null)
         {
             this.TradeAllowanceCharges.Add(new TradeCharge()
             {
@@ -367,7 +368,8 @@ public TradeLineItem AddTradeCharge(CurrencyCodes currency, decimal? basisAmount
                 ActualAmount = actualAmount,
                 BasisAmount = basisAmount,
                 Reason = reason,
-                ReasonCode = reasonCode
+                ReasonCode = reasonCode,
+                MultiplierFactor = multiplierFactor
             });
             return this;
         } // !AddTradeAllowanceCharge()        

From 2efe8636fcd2dbe892d5be8161d4c115a21bea1f Mon Sep 17 00:00:00 2001
From: Eryk Gajos <gajos@cbl-computer.de>
Date: Fri, 12 Sep 2025 13:10:15 +0200
Subject: [PATCH 2/2] - Added field name

---
 ZUGFeRD/AbstractTradeAllowanceCharge.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ZUGFeRD/AbstractTradeAllowanceCharge.cs b/ZUGFeRD/AbstractTradeAllowanceCharge.cs
index f4b42fc7..7aa80f30 100644
--- a/ZUGFeRD/AbstractTradeAllowanceCharge.cs
+++ b/ZUGFeRD/AbstractTradeAllowanceCharge.cs
@@ -82,6 +82,7 @@ public abstract class AbstractTradeAllowanceCharge : Charge
 
         /// <summary>
         /// Surcharges/discounts at invoice level - percentage rate
+        /// BT-94, BT-101
         /// </summary>
         public decimal? MultiplierFactor { get; internal set; }
     }