diff --git a/csharp/Lib/StatusApi/BatteryStatus.cs b/csharp/Lib/StatusApi/BatteryStatus.cs
index fc8961fd1..0f1fedc46 100644
--- a/csharp/Lib/StatusApi/BatteryStatus.cs
+++ b/csharp/Lib/StatusApi/BatteryStatus.cs
@@ -10,8 +10,8 @@ using T = BatteryStatus;
 [OpParallel]
 public partial record BatteryStatus : DeviceStatus, IDcConnection
 {
-    public required DcPhase     Dc          { get; init; }
-    public required Percent     Soc         { get; init; }
-    public required Temperature Temperature { get; init; }
+    public DcPhase     Dc          { get; init; }
+    public Percent     Soc         { get; init; }
+    public Temperature Temperature { get; init; }
 }
     
\ No newline at end of file
diff --git a/csharp/Lib/StatusApi/DcDcConverterStatus.cs b/csharp/Lib/StatusApi/DcDcConverterStatus.cs
index a7d931065..de33033d2 100644
--- a/csharp/Lib/StatusApi/DcDcConverterStatus.cs
+++ b/csharp/Lib/StatusApi/DcDcConverterStatus.cs
@@ -6,8 +6,8 @@ namespace InnovEnergy.Lib.StatusApi;
 [OpParallel]
 public partial record DcDcConverterStatus : DeviceStatus
 {
-    public required DcPhase Left  { get; init; }
-    public required DcPhase Right { get; init; }
+    public DcPhase Left  { get; init; }
+    public DcPhase Right { get; init; }
 }
     
  
diff --git a/csharp/Lib/StatusApi/MpptStatus.cs b/csharp/Lib/StatusApi/MpptStatus.cs
index 6514ad5f0..99d4df09b 100644
--- a/csharp/Lib/StatusApi/MpptStatus.cs
+++ b/csharp/Lib/StatusApi/MpptStatus.cs
@@ -7,8 +7,8 @@ namespace InnovEnergy.Lib.StatusApi;
 [OpParallel]
 public partial record MpptStatus : IDcConnection, IPvConnection
 {
-    public required DcPhase                Dc      { get; init; }
-    public required IReadOnlyList<DcPhase> Strings { get; init; }
+    public DcPhase                Dc      { get; init; }
+    public IReadOnlyList<DcPhase> Strings { get; init; }
 }
 
     
\ No newline at end of file
diff --git a/csharp/Lib/StatusApi/PowerMeterStatus.cs b/csharp/Lib/StatusApi/PowerMeterStatus.cs
index d02a2ea72..26552861e 100644
--- a/csharp/Lib/StatusApi/PowerMeterStatus.cs
+++ b/csharp/Lib/StatusApi/PowerMeterStatus.cs
@@ -7,5 +7,5 @@ namespace InnovEnergy.Lib.StatusApi;
 [OpParallel]
 public partial record PowerMeterStatus : DeviceStatus, IAc3Connection
 {
-    public required Ac3Phase Ac { get; init; }
+    public Ac3Phase Ac { get; init; }
 } 
\ No newline at end of file
diff --git a/csharp/Lib/StatusApi/SinglePhaseInverterStatus.cs b/csharp/Lib/StatusApi/SinglePhaseInverterStatus.cs
index efd9e7f5c..caaec0d94 100644
--- a/csharp/Lib/StatusApi/SinglePhaseInverterStatus.cs
+++ b/csharp/Lib/StatusApi/SinglePhaseInverterStatus.cs
@@ -10,6 +10,6 @@ public partial record SinglePhaseInverterStatus :
     IAc1Connection, 
     IDcConnection
 {
-    public required Ac1Phase Ac { get; init; }
-    public required DcPhase  Dc { get; init; }
+    public Ac1Phase Ac { get; init; }
+    public DcPhase  Dc { get; init; }
 }
diff --git a/csharp/Lib/StatusApi/SinglePhasePvInverterStatus.cs b/csharp/Lib/StatusApi/SinglePhasePvInverterStatus.cs
index 3fc2db56a..d6d885a78 100644
--- a/csharp/Lib/StatusApi/SinglePhasePvInverterStatus.cs
+++ b/csharp/Lib/StatusApi/SinglePhasePvInverterStatus.cs
@@ -10,6 +10,6 @@ public partial record SinglePhasePvInverterStatus :
     IAc1Connection, 
     IPvConnection
 {
-    public required Ac1Phase               Ac      { get; init; }
-    public required IReadOnlyList<DcPhase> Strings { get; init; }
+    public Ac1Phase               Ac      { get; init; }
+    public IReadOnlyList<DcPhase> Strings { get; init; }
 }
diff --git a/csharp/Lib/StatusApi/ThreePhaseInverterStatus.cs b/csharp/Lib/StatusApi/ThreePhaseInverterStatus.cs
index 306430190..e9fe03d3c 100644
--- a/csharp/Lib/StatusApi/ThreePhaseInverterStatus.cs
+++ b/csharp/Lib/StatusApi/ThreePhaseInverterStatus.cs
@@ -10,7 +10,7 @@ public partial record ThreePhaseInverterStatus :
     IAc3Connection,
     IDcConnection
 {
-    public required Ac3Phase Ac { get; init; }
-    public required DcPhase  Dc { get; init; }
+    public Ac3Phase Ac { get; init; }
+    public DcPhase  Dc { get; init; }
 }
     
\ No newline at end of file
diff --git a/csharp/Lib/StatusApi/ThreePhasePvInverterStatus.cs b/csharp/Lib/StatusApi/ThreePhasePvInverterStatus.cs
index b5a7686da..c2fb05d30 100644
--- a/csharp/Lib/StatusApi/ThreePhasePvInverterStatus.cs
+++ b/csharp/Lib/StatusApi/ThreePhasePvInverterStatus.cs
@@ -10,6 +10,6 @@ public partial record ThreePhasePvInverterStatus :
     IAc3Connection,
     IPvConnection
 {
-    public required Ac3Phase               Ac      { get; init; }
-    public required IReadOnlyList<DcPhase> Strings { get; init; }
+    public Ac3Phase               Ac      { get; init; }
+    public IReadOnlyList<DcPhase> Strings { get; init; }
 }
diff --git a/csharp/Lib/Units/Composite/Ac1Phase.cs b/csharp/Lib/Units/Composite/Ac1Phase.cs
index d7cfc20e7..40ddd54b0 100644
--- a/csharp/Lib/Units/Composite/Ac1Phase.cs
+++ b/csharp/Lib/Units/Composite/Ac1Phase.cs
@@ -1,11 +1,10 @@
-
 using System.Diagnostics.CodeAnalysis;
 
 namespace InnovEnergy.Lib.Units.Composite;
 
 public record Ac1Phase : AcPhase
 {
-    public required Frequency Frequency { get; init; }
+    public  Frequency Frequency { get; init; }
 
     [SuppressMessage("ReSharper", "RedundantCast")]
     public static Ac1Phase operator |(Ac1Phase left, Ac1Phase right)
@@ -21,7 +20,6 @@ public record Ac1Phase : AcPhase
             Phi = p.Phi
         };
     }
-    
 
 }
 
diff --git a/csharp/Lib/Units/Composite/Ac3Phase.cs b/csharp/Lib/Units/Composite/Ac3Phase.cs
index d73f8e9e4..a80f89ba0 100644
--- a/csharp/Lib/Units/Composite/Ac3Phase.cs
+++ b/csharp/Lib/Units/Composite/Ac3Phase.cs
@@ -5,10 +5,10 @@ namespace InnovEnergy.Lib.Units.Composite;
 
 public record Ac3Phase
 {
-    public required AcPhase   L1        { get; init; }
-    public required AcPhase   L2        { get; init; }
-    public required AcPhase   L3        { get; init; }
-    public required Frequency Frequency { get; init; }
+    public  AcPhase   L1        { get; init; }
+    public  AcPhase   L2        { get; init; }
+    public  AcPhase   L3        { get; init; }
+    public  Frequency Frequency { get; init; }
     
     public ApparentPower ApparentPower => L1.ApparentPower + L2.ApparentPower + L3.ApparentPower;
     public ReactivePower ReactivePower => L1.ReactivePower + L2.ReactivePower + L3.ReactivePower;
@@ -17,6 +17,4 @@ public record Ac3Phase
 
     public static Ac3Phase operator |(Ac3Phase left, Ac3Phase right) => OpParallel(left, right);
     private static readonly Func<Ac3Phase, Ac3Phase, Ac3Phase> OpParallel = "|".CreateBinaryOpForProps<Ac3Phase>();
-
-    
 }
\ No newline at end of file
diff --git a/csharp/Lib/Units/Composite/AcPhase.cs b/csharp/Lib/Units/Composite/AcPhase.cs
index 426091fbc..de526650d 100644
--- a/csharp/Lib/Units/Composite/AcPhase.cs
+++ b/csharp/Lib/Units/Composite/AcPhase.cs
@@ -6,20 +6,20 @@ namespace InnovEnergy.Lib.Units.Composite;
 public record AcPhase : IPhase
 {
     private readonly Voltage _Voltage;
-    public required Voltage Voltage
+    public Voltage Voltage
     {
         get  => _Voltage;
-        init => _Voltage = value >= 0 ? value : throw new ArgumentException("RMS value cannot be negative");
+        init => _Voltage = value >= 0m ? value : throw new ArgumentException("RMS value cannot be negative");
     }
 
     private readonly Current _Current;
-    public required Current Current
+    public Current Current
     {
         get  => _Current;
-        init => _Current = value >= 0 ? value : throw new ArgumentException("RMS value cannot be negative");
+        init => _Current = value >= 0m ? value : throw new ArgumentException("RMS value cannot be negative");
     }
     
-    public required Angle   Phi { get; init; }
+    public Angle   Phi { get; init; }
     
     public ApparentPower ApparentPower => Voltage.Value * Current.Value ;
     public Power         ActivePower   => ApparentPower.Value * PowerFactor;
diff --git a/csharp/Lib/Units/Composite/DcPhase.cs b/csharp/Lib/Units/Composite/DcPhase.cs
index 2d0b24b68..919589b6a 100644
--- a/csharp/Lib/Units/Composite/DcPhase.cs
+++ b/csharp/Lib/Units/Composite/DcPhase.cs
@@ -4,13 +4,11 @@ namespace InnovEnergy.Lib.Units.Composite;
 
 public record DcPhase : IPhase
 {
-   public required Voltage Voltage { get; init;}
-   public required Current Current { get; init;}
+   public Voltage Voltage { get; init; }
+   public Current Current { get; init; }
    
    public Power Power => Current * Voltage;
    
    public static DcPhase operator |(DcPhase left, DcPhase right) => OpParallel(left, right);
    private static readonly Func<DcPhase, DcPhase, DcPhase> OpParallel = "|".CreateBinaryOpForProps<DcPhase>();
-
- 
 }
\ No newline at end of file