diff --git a/Interfaces/ZUGFeRDInterface.vb b/Interfaces/ZUGFeRDInterface.vb
index e717bff1..498ea873 100644
--- a/Interfaces/ZUGFeRDInterface.vb
+++ b/Interfaces/ZUGFeRDInterface.vb
@@ -1,13 +1,8 @@
-Imports System.Collections.Generic
-Imports System.IO
-Imports System.Reflection.Emit
+Imports System.IO
 Imports System.Xml
 Imports System.Xml.Serialization
-Imports System.Xml.XPath
-Imports System.Xml.Xsl
 Imports DigitalData.Modules.Interfaces.Exceptions
 Imports DigitalData.Modules.Interfaces.ZUGFeRD
-Imports DigitalData.Modules.Interfaces.ZUGFeRDInterface
 Imports DigitalData.Modules.Logging
 Imports GdPicture14
 
@@ -24,6 +19,11 @@ Public Class ZUGFeRDInterface
     Public Const ZUGFERD_SPEC_10 = "ZUGFERD_10"
     Public Const ZUGFERD_SPEC_2x = "ZUGFERD_2x"
 
+    Public Const XMLSCHEMA_ZUGFERD_10 = "Version1_0"
+    Public Const XMLSCHEMA_ZUGFERD_20 = "Version2_0"
+    Public Const XMLSCHEMA_ZUGFERD_211 = "Version2_1_1"
+    Public Const XMLSCHEMA_ZUGFERD_22 = "Version2_2_FacturX"
+
     Private ReadOnly ValidFilenames As New List(Of String) From {
         PDFEmbeds.ZUGFERD_XML_FILENAME.ToUpper,
         PDFEmbeds.FACTUR_X_XML_FILENAME_DE.ToUpper,
@@ -57,6 +57,7 @@ Public Class ZUGFeRDInterface
         Public Property XElementObject As XElement
         Public Property SchemaObject As Object
         Public Property Specification As String
+        Public Property UsedXMLSchema As String
         Public Property ValidationErrors As New List(Of ZugferdValidationError)
     End Class
 
@@ -279,6 +280,7 @@ Public Class ZUGFeRDInterface
     Private Class AllowedType
         Public SchemaType As Type
         Public Specification As String
+        Public XMLSchema As String
     End Class
 
     Public Function ValidateZUGFeRDDocument(pResult As ZugferdResult) As ZugferdResult
@@ -291,13 +293,15 @@ Public Class ZUGFeRDInterface
 
             Dim oObject As Object = Nothing
             Dim oSpecification As String = Nothing
+            Dim oUsedXMLSchema As String = Nothing
 
             Dim oAllowedTypes As New List(Of AllowedType)
 
             If _Options.AllowZugferd_1_0_Schema Then
                 oAllowedTypes.Add(New AllowedType With {
                     .SchemaType = GetType(Version1_0.CrossIndustryDocumentType),
-                    .Specification = ZUGFERD_SPEC_10
+                    .Specification = ZUGFERD_SPEC_10,
+                    .XMLSchema = XMLSCHEMA_ZUGFERD_10
                 })
             End If
 
@@ -305,15 +309,18 @@ Public Class ZUGFeRDInterface
                 oAllowedTypes.AddRange(New List(Of AllowedType) From {
                     New AllowedType With {
                         .SchemaType = GetType(Version2_0.CrossIndustryInvoiceType),
-                        .Specification = ZUGFERD_SPEC_2x
+                        .Specification = ZUGFERD_SPEC_2x,
+                        .XMLSchema = XMLSCHEMA_ZUGFERD_20
                     },
                     New AllowedType With {
                         .SchemaType = GetType(Version2_1_1.CrossIndustryInvoiceType),
-                        .Specification = ZUGFERD_SPEC_2x
+                        .Specification = ZUGFERD_SPEC_2x,
+                        .XMLSchema = XMLSCHEMA_ZUGFERD_211
                     },
                     New AllowedType With {
                         .SchemaType = GetType(Version2_2_FacturX.CrossIndustryInvoiceType),
-                        .Specification = ZUGFERD_SPEC_2x
+                        .Specification = ZUGFERD_SPEC_2x,
+                        .XMLSchema = XMLSCHEMA_ZUGFERD_22
                     }
                 })
             End If
@@ -327,6 +334,7 @@ Public Class ZUGFeRDInterface
                     oReader = pResult.XElementObject.CreateReader()
                     oObject = oSerializer.Deserialize(oReader)
                     oSpecification = oType.Specification
+                    oUsedXMLSchema = oType.XMLSchema
 
                     _logger.Debug("Serializing with type [{0}] succeeded", oTypeName)
                     Exit For
@@ -345,6 +353,7 @@ Public Class ZUGFeRDInterface
             End If
 
             pResult.Specification = oSpecification
+            pResult.UsedXMLSchema = oUsedXMLSchema
             pResult.SchemaObject = oObject
 
             Return pResult