diff --git a/History.md b/History.md
index 3ea46c77..2c1e73f2 100644
--- a/History.md
+++ b/History.md
@@ -4,6 +4,7 @@
 - #790
 - upgrade from PDFBOX 3.0.2 to 3.0.5 
 - #817
+- #833
 
 2.16.4
 =======
diff --git a/validator/pom.xml b/validator/pom.xml
index b98368ef..bce750a1 100644
--- a/validator/pom.xml
+++ b/validator/pom.xml
@@ -230,10 +230,10 @@
                         </goals>
 
                         <configuration>
-                            <outputDirectory>src/main/resources/xslt/ZF_232/</outputDirectory>
+                            <outputDirectory>src/main/resources/xslt/ZF_233/</outputDirectory>
                             <resources>
                                 <resource>
-                                    <directory>${basedir}/src/main/resources/schematron/ZF_232/</directory>
+                                    <directory>${basedir}/src/main/resources/schematron/ZF_233/</directory>
                                     <includes>
                                         <include>**/*.xml</include>
                                     </includes>
diff --git a/validator/src/main/java/org/mustangproject/validator/XMLValidator.java b/validator/src/main/java/org/mustangproject/validator/XMLValidator.java
index cf911dc6..9202b91f 100644
--- a/validator/src/main/java/org/mustangproject/validator/XMLValidator.java
+++ b/validator/src/main/java/org/mustangproject/validator/XMLValidator.java
@@ -205,7 +205,7 @@ public class XMLValidator extends Validator {
 				boolean isEN16931 = false;
 				boolean isExtended = false;
 				boolean isXRechnung = false;
-				String currentZFVersionDir = "ZF_232";
+				String currentZFVersionDir = "ZF_233";
 				int mainSchematronSectionErrorTypeCode = 4;
 				String xsltFilename = null;
 				// urn:ferd:CrossIndustryDocument:invoice:1p0:extended,
diff --git a/validator/src/main/resources/schema/ZF_232/BASIC-WL/FACTUR-X_BASIC-WL.xsd b/validator/src/main/resources/schema/ZF_233/BASIC-WL/FACTUR-X_BASIC-WL.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/BASIC-WL/FACTUR-X_BASIC-WL.xsd
rename to validator/src/main/resources/schema/ZF_233/BASIC-WL/FACTUR-X_BASIC-WL.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd b/validator/src/main/resources/schema/ZF_233/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
rename to validator/src/main/resources/schema/ZF_233/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd b/validator/src/main/resources/schema/ZF_233/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
rename to validator/src/main/resources/schema/ZF_233/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd b/validator/src/main/resources/schema/ZF_233/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
rename to validator/src/main/resources/schema/ZF_233/BASIC-WL/FACTUR-X_BASIC-WL_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/BASIC/FACTUR-X_BASIC.xsd b/validator/src/main/resources/schema/ZF_233/BASIC/FACTUR-X_BASIC.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/BASIC/FACTUR-X_BASIC.xsd
rename to validator/src/main/resources/schema/ZF_233/BASIC/FACTUR-X_BASIC.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd b/validator/src/main/resources/schema/ZF_233/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
rename to validator/src/main/resources/schema/ZF_233/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd b/validator/src/main/resources/schema/ZF_233/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
rename to validator/src/main/resources/schema/ZF_233/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd b/validator/src/main/resources/schema/ZF_233/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
rename to validator/src/main/resources/schema/ZF_233/BASIC/FACTUR-X_BASIC_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/EN16931/FACTUR-X_EN16931.xsd b/validator/src/main/resources/schema/ZF_233/EN16931/FACTUR-X_EN16931.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/EN16931/FACTUR-X_EN16931.xsd
rename to validator/src/main/resources/schema/ZF_233/EN16931/FACTUR-X_EN16931.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd b/validator/src/main/resources/schema/ZF_233/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
rename to validator/src/main/resources/schema/ZF_233/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd b/validator/src/main/resources/schema/ZF_233/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
rename to validator/src/main/resources/schema/ZF_233/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd b/validator/src/main/resources/schema/ZF_233/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
rename to validator/src/main/resources/schema/ZF_233/EN16931/FACTUR-X_EN16931_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/EXTENDED/FACTUR-X_EXTENDED.xsd b/validator/src/main/resources/schema/ZF_233/EXTENDED/FACTUR-X_EXTENDED.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/EXTENDED/FACTUR-X_EXTENDED.xsd
rename to validator/src/main/resources/schema/ZF_233/EXTENDED/FACTUR-X_EXTENDED.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd b/validator/src/main/resources/schema/ZF_233/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
rename to validator/src/main/resources/schema/ZF_233/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd b/validator/src/main/resources/schema/ZF_233/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
rename to validator/src/main/resources/schema/ZF_233/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd b/validator/src/main/resources/schema/ZF_233/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
rename to validator/src/main/resources/schema/ZF_233/EXTENDED/FACTUR-X_EXTENDED_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/MINIMUM/FACTUR-X_MINIMUM.xsd b/validator/src/main/resources/schema/ZF_233/MINIMUM/FACTUR-X_MINIMUM.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/MINIMUM/FACTUR-X_MINIMUM.xsd
rename to validator/src/main/resources/schema/ZF_233/MINIMUM/FACTUR-X_MINIMUM.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd b/validator/src/main/resources/schema/ZF_233/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
rename to validator/src/main/resources/schema/ZF_233/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_QualifiedDataType_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd b/validator/src/main/resources/schema/ZF_233/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
rename to validator/src/main/resources/schema/ZF_233/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_ReusableAggregateBusinessInformationEntity_100.xsd
diff --git a/validator/src/main/resources/schema/ZF_232/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd b/validator/src/main/resources/schema/ZF_233/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
similarity index 100%
rename from validator/src/main/resources/schema/ZF_232/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
rename to validator/src/main/resources/schema/ZF_233/MINIMUM/FACTUR-X_MINIMUM_urn_un_unece_uncefact_data_standard_UnqualifiedDataType_100.xsd
diff --git a/validator/src/main/resources/schematron/ZF_232/FACTUR-X_BASIC-WL.sch b/validator/src/main/resources/schematron/ZF_233/FACTUR-X_BASIC-WL.sch
similarity index 100%
rename from validator/src/main/resources/schematron/ZF_232/FACTUR-X_BASIC-WL.sch
rename to validator/src/main/resources/schematron/ZF_233/FACTUR-X_BASIC-WL.sch
diff --git a/validator/src/main/resources/schematron/ZF_232/FACTUR-X_BASIC-WL_codedb.xml b/validator/src/main/resources/schematron/ZF_233/FACTUR-X_BASIC-WL_codedb.xml
similarity index 100%
rename from validator/src/main/resources/schematron/ZF_232/FACTUR-X_BASIC-WL_codedb.xml
rename to validator/src/main/resources/schematron/ZF_233/FACTUR-X_BASIC-WL_codedb.xml
diff --git a/validator/src/main/resources/schematron/ZF_232/FACTUR-X_BASIC.sch b/validator/src/main/resources/schematron/ZF_233/FACTUR-X_BASIC.sch
similarity index 100%
rename from validator/src/main/resources/schematron/ZF_232/FACTUR-X_BASIC.sch
rename to validator/src/main/resources/schematron/ZF_233/FACTUR-X_BASIC.sch
diff --git a/validator/src/main/resources/schematron/ZF_232/FACTUR-X_BASIC_codedb.xml b/validator/src/main/resources/schematron/ZF_233/FACTUR-X_BASIC_codedb.xml
similarity index 100%
rename from validator/src/main/resources/schematron/ZF_232/FACTUR-X_BASIC_codedb.xml
rename to validator/src/main/resources/schematron/ZF_233/FACTUR-X_BASIC_codedb.xml
diff --git a/validator/src/main/resources/schematron/ZF_232/FACTUR-X_EN16931.sch b/validator/src/main/resources/schematron/ZF_233/FACTUR-X_EN16931.sch
similarity index 100%
rename from validator/src/main/resources/schematron/ZF_232/FACTUR-X_EN16931.sch
rename to validator/src/main/resources/schematron/ZF_233/FACTUR-X_EN16931.sch
diff --git a/validator/src/main/resources/schematron/ZF_232/FACTUR-X_EN16931_codedb.xml b/validator/src/main/resources/schematron/ZF_233/FACTUR-X_EN16931_codedb.xml
similarity index 100%
rename from validator/src/main/resources/schematron/ZF_232/FACTUR-X_EN16931_codedb.xml
rename to validator/src/main/resources/schematron/ZF_233/FACTUR-X_EN16931_codedb.xml
diff --git a/validator/src/main/resources/schematron/ZF_232/FACTUR-X_EXTENDED.sch b/validator/src/main/resources/schematron/ZF_233/FACTUR-X_EXTENDED.sch
similarity index 100%
rename from validator/src/main/resources/schematron/ZF_232/FACTUR-X_EXTENDED.sch
rename to validator/src/main/resources/schematron/ZF_233/FACTUR-X_EXTENDED.sch
diff --git a/validator/src/main/resources/schematron/ZF_232/FACTUR-X_EXTENDED_codedb.xml b/validator/src/main/resources/schematron/ZF_233/FACTUR-X_EXTENDED_codedb.xml
similarity index 100%
rename from validator/src/main/resources/schematron/ZF_232/FACTUR-X_EXTENDED_codedb.xml
rename to validator/src/main/resources/schematron/ZF_233/FACTUR-X_EXTENDED_codedb.xml
diff --git a/validator/src/main/resources/schematron/ZF_232/FACTUR-X_MINIMUM.sch b/validator/src/main/resources/schematron/ZF_233/FACTUR-X_MINIMUM.sch
similarity index 100%
rename from validator/src/main/resources/schematron/ZF_232/FACTUR-X_MINIMUM.sch
rename to validator/src/main/resources/schematron/ZF_233/FACTUR-X_MINIMUM.sch
diff --git a/validator/src/main/resources/schematron/ZF_232/FACTUR-X_MINIMUM_codedb.xml b/validator/src/main/resources/schematron/ZF_233/FACTUR-X_MINIMUM_codedb.xml
similarity index 100%
rename from validator/src/main/resources/schematron/ZF_232/FACTUR-X_MINIMUM_codedb.xml
rename to validator/src/main/resources/schematron/ZF_233/FACTUR-X_MINIMUM_codedb.xml