diff --git a/README.md b/README.md
index e8d5f696d5935a9077dc75f99eaab99360cd336e..90f82c95e84317ee9a5ccde4b190c302292e153d 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,6 @@ See the projects' module documentation for more specific information:
 * [API Module ](api/README.md)
 * [Core Module ](core/README.md)
 * [Client Module ](client/README.md)
-* [Open-API Module ](open-api/README.md)
 
 ### Setup
 
@@ -61,7 +60,7 @@ _The following steps show how to get the SDK running_
    ```
 4. Build the project
    ```sh
-   mvn clean install
+   mvn clean install -DskipTests
    ```
 5. Enter your API keys and references to your private decryption key in `config.yml`
 
diff --git a/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/AlgEnum.java b/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/AlgEnum.java
index 660d7209fe7c9662b66031fd2f9809c370999aa3..efa8b31810cabba94c43ecadfd10815b5b3ab215 100644
--- a/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/AlgEnum.java
+++ b/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/AlgEnum.java
@@ -3,6 +3,8 @@ package de.fitko.fitconnect.api.domain.model.jwk;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 
+import java.util.Arrays;
+
 public enum AlgEnum {
 
     PS512("PS512"),
@@ -27,11 +29,9 @@ public enum AlgEnum {
 
     @JsonCreator
     public static AlgEnum fromValue(final String value) {
-        for (final AlgEnum algEnum : AlgEnum.values()) {
-            if (algEnum.value.equals(value)) {
-                return algEnum;
-            }
-        }
-        throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return Arrays.stream(AlgEnum.values())
+                .filter(enumValue -> enumValue.value.equals(value))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unexpected value '" + value + "'"));
     }
 }
diff --git a/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/EEnum.java b/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/EEnum.java
index 4a4d8345a5da4b127629d3bcb181a160cf305f42..dc447ae3f0a55fdd6b8e60cf0413902be491825d 100644
--- a/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/EEnum.java
+++ b/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/EEnum.java
@@ -3,6 +3,8 @@ package de.fitko.fitconnect.api.domain.model.jwk;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 
+import java.util.Arrays;
+
 public enum EEnum {
 
     AQAB("AQAB");
@@ -25,11 +27,9 @@ public enum EEnum {
 
     @JsonCreator
     public static EEnum fromValue(final String value) {
-        for (final EEnum eEnum : EEnum.values()) {
-            if (eEnum.value.equals(value)) {
-                return eEnum;
-            }
-        }
-        throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return Arrays.stream(EEnum.values())
+                .filter(enumValue -> enumValue.value.equals(value))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unexpected value '" + value + "'"));
     }
 }
diff --git a/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/KeyOpsEnum.java b/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/KeyOpsEnum.java
index 211734e90db7042ffc794bd7c9acf3796de9c873..455ff64f203030ffe7c3a04b6878d72030805b26 100644
--- a/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/KeyOpsEnum.java
+++ b/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/KeyOpsEnum.java
@@ -3,6 +3,8 @@ package de.fitko.fitconnect.api.domain.model.jwk;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 
+import java.util.Arrays;
+
 public enum KeyOpsEnum {
 
     VERIFY("verify"),
@@ -27,11 +29,9 @@ public enum KeyOpsEnum {
 
     @JsonCreator
     public static KeyOpsEnum fromValue(final String value) {
-        for (final KeyOpsEnum keyOpsEnum : KeyOpsEnum.values()) {
-            if (keyOpsEnum.value.equals(value)) {
-                return keyOpsEnum;
-            }
-        }
-        throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return Arrays.stream(KeyOpsEnum.values())
+                .filter(enumValue -> enumValue.value.equals(value))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unexpected value '" + value + "'"));
     }
 }
diff --git a/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/KtyEnum.java b/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/KtyEnum.java
index a9a65a8874b1f70c9dcabac7883f4c4db6895290..b422d165aa8141aac80aadc279640f24add77e61 100644
--- a/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/KtyEnum.java
+++ b/api/src/main/java/de/fitko/fitconnect/api/domain/model/jwk/KtyEnum.java
@@ -3,6 +3,8 @@ package de.fitko.fitconnect.api.domain.model.jwk;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 
+import java.util.Arrays;
+
 public enum KtyEnum {
 
     RSA("RSA");
@@ -25,11 +27,9 @@ public enum KtyEnum {
 
     @JsonCreator
     public static KtyEnum fromValue(final String value) {
-        for (final KtyEnum ktyEnum : KtyEnum.values()) {
-            if (ktyEnum.value.equals(value)) {
-                return ktyEnum;
-            }
-        }
-        throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return Arrays.stream(KtyEnum.values())
+                .filter(enumValue -> enumValue.value.equals(value))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unexpected value '" + value + "'"));
     }
 }
diff --git a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/EidasAdesProfile.java b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/EidasAdesProfile.java
index e15e1e7f5effc5a0fb97c05f8720c0353196dbe1..ae1e93c20c5c436982f9fccaf520d8635834d544 100644
--- a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/EidasAdesProfile.java
+++ b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/EidasAdesProfile.java
@@ -3,8 +3,7 @@ package de.fitko.fitconnect.api.domain.model.metadata;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.util.Arrays;
 
 public enum EidasAdesProfile {
 
@@ -14,13 +13,6 @@ public enum EidasAdesProfile {
     HTTP_URI_ETSI_ORG_ADES_191_X_2_LEVEL_BASELINE_B_LTA("http://uri.etsi.org/ades/191x2/level/baseline/B-LTA#");
 
     private final String value;
-    private final static Map<String, EidasAdesProfile> CONSTANTS = new HashMap<>();
-
-    static {
-        for (final EidasAdesProfile c : values()) {
-            CONSTANTS.put(c.value, c);
-        }
-    }
 
     EidasAdesProfile(final String value) {
         this.value = value;
@@ -38,12 +30,10 @@ public enum EidasAdesProfile {
 
     @JsonCreator
     public static EidasAdesProfile fromValue(final String value) {
-        final EidasAdesProfile constant = CONSTANTS.get(value);
-        if (constant == null) {
-            throw new IllegalArgumentException(value);
-        } else {
-            return constant;
-        }
+        return Arrays.stream(EidasAdesProfile.values())
+                .filter(enumValue -> enumValue.value.equals(value))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unexpected value '" + value + "'"));
     }
 
 }
diff --git a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/SignatureFormat.java b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/SignatureFormat.java
index e9f017ec21868a09055a52fd5ba99d466c9bf70f..6d4230e958d24ee72b0316650ef8d94b778cccac 100644
--- a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/SignatureFormat.java
+++ b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/SignatureFormat.java
@@ -3,8 +3,7 @@ package de.fitko.fitconnect.api.domain.model.metadata;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.util.Arrays;
 
 public enum SignatureFormat {
 
@@ -13,14 +12,8 @@ public enum SignatureFormat {
     PDF("pdf"),
     ASIC("asic"),
     JSON("json");
-    private final String value;
-    private final static Map<String, SignatureFormat> CONSTANTS = new HashMap<>();
 
-    static {
-        for (final SignatureFormat c : values()) {
-            CONSTANTS.put(c.value, c);
-        }
-    }
+    private final String value;
 
     SignatureFormat(final String value) {
         this.value = value;
@@ -38,12 +31,10 @@ public enum SignatureFormat {
 
     @JsonCreator
     public static SignatureFormat fromValue(final String value) {
-        final SignatureFormat constant = CONSTANTS.get(value);
-        if (constant == null) {
-            throw new IllegalArgumentException(value);
-        } else {
-            return constant;
-        }
+        return Arrays.stream(SignatureFormat.values())
+                .filter(enumValue -> enumValue.value.equals(value))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unexpected value '" + value + "'"));
     }
 
 }
\ No newline at end of file
diff --git a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/attachment/Purpose.java b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/attachment/Purpose.java
index a5726ea3875d4c751fbd77058fb39489350ffcb1..1df21ac81fb2b11aebb66004ab9286f00e20eb8c 100644
--- a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/attachment/Purpose.java
+++ b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/attachment/Purpose.java
@@ -3,8 +3,7 @@ package de.fitko.fitconnect.api.domain.model.metadata.attachment;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.util.Arrays;
 
 public enum Purpose {
 
@@ -12,15 +11,8 @@ public enum Purpose {
     ATTACHMENT("attachment"),
     REPORT("report");
     private final String value;
-    private final static Map<String, Purpose> CONSTANTS = new HashMap<>();
 
-    static {
-        for (Purpose c : values()) {
-            CONSTANTS.put(c.value, c);
-        }
-    }
-
-    Purpose(String value) {
+    Purpose(final String value) {
         this.value = value;
     }
 
@@ -35,12 +27,10 @@ public enum Purpose {
     }
 
     @JsonCreator
-    public static Purpose fromValue(String value) {
-        Purpose constant = CONSTANTS.get(value);
-        if (constant == null) {
-            throw new IllegalArgumentException(value);
-        } else {
-            return constant;
-        }
+    public static Purpose fromValue(final String value) {
+        return Arrays.stream(Purpose.values())
+                .filter(enumValue -> enumValue.value.equals(value))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unexpected value '" + value + "'"));
     }
 }
diff --git a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/attachment/signature/AttachmentSignatureType.java b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/attachment/signature/AttachmentSignatureType.java
index 250885804acbef71261caf67eb9d33e7bfb05b07..12366b0449162ca08957f5342255826fe8d87df3 100644
--- a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/attachment/signature/AttachmentSignatureType.java
+++ b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/attachment/signature/AttachmentSignatureType.java
@@ -3,20 +3,12 @@ package de.fitko.fitconnect.api.domain.model.metadata.attachment.signature;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.util.Arrays;
 
 public enum AttachmentSignatureType {
 
     SHA_512("sha512");
     private final String value;
-    private final static Map<String, AttachmentSignatureType> CONSTANTS = new HashMap<>();
-
-    static {
-        for (final AttachmentSignatureType c : values()) {
-            CONSTANTS.put(c.value, c);
-        }
-    }
 
     AttachmentSignatureType(final String value) {
         this.value = value;
@@ -34,12 +26,10 @@ public enum AttachmentSignatureType {
 
     @JsonCreator
     public static AttachmentSignatureType fromValue(final String value) {
-        final AttachmentSignatureType constant = CONSTANTS.get(value);
-        if (constant == null) {
-            throw new IllegalArgumentException(value);
-        } else {
-            return constant;
-        }
+        return Arrays.stream(AttachmentSignatureType.values())
+                .filter(enumValue -> enumValue.value.equals(value))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unexpected value '" + value + "'"));
     }
 
 }
diff --git a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/data/DataSignatureType.java b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/data/DataSignatureType.java
index 3208cb14fccf81dbdba1696d234fc782711f8a0e..06b7ffe8414f61f76536f43a8078b73b8ceb9c07 100644
--- a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/data/DataSignatureType.java
+++ b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/data/DataSignatureType.java
@@ -3,20 +3,12 @@ package de.fitko.fitconnect.api.domain.model.metadata.data;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.util.Arrays;
 
 public enum DataSignatureType {
 
     SHA_512("sha512");
     private final String value;
-    private final static Map<String, DataSignatureType> CONSTANTS = new HashMap<>();
-
-    static {
-        for (final DataSignatureType c : values()) {
-            CONSTANTS.put(c.value, c);
-        }
-    }
 
     DataSignatureType(final String value) {
         this.value = value;
@@ -34,12 +26,10 @@ public enum DataSignatureType {
 
     @JsonCreator
     public static DataSignatureType fromValue(final String value) {
-        final DataSignatureType constant = CONSTANTS.get(value);
-        if (constant == null) {
-            throw new IllegalArgumentException(value);
-        } else {
-            return constant;
-        }
+        return Arrays.stream(DataSignatureType.values())
+                .filter(enumValue -> enumValue.value.equals(value))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unexpected value '" + value + "'"));
     }
 
 }
diff --git a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/data/MimeType.java b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/data/MimeType.java
index 03bfb1eef7f4169c51bc8824e97dfedf34e88634..88c3fe319830c64f09462368ed7e1abf95a6bdb8 100644
--- a/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/data/MimeType.java
+++ b/api/src/main/java/de/fitko/fitconnect/api/domain/model/metadata/data/MimeType.java
@@ -3,21 +3,14 @@ package de.fitko.fitconnect.api.domain.model.metadata.data;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.util.Arrays;
 
 public enum MimeType {
 
     APPLICATION_JSON("application/json"),
     APPLICATION_XML("application/xml");
-    private final String value;
-    private final static Map<String, MimeType> CONSTANTS = new HashMap<>();
 
-    static {
-        for (final MimeType c : values()) {
-            CONSTANTS.put(c.value, c);
-        }
-    }
+    private final String value;
 
     MimeType(final String value) {
         this.value = value;
@@ -35,11 +28,9 @@ public enum MimeType {
 
     @JsonCreator
     public static MimeType fromValue(final String value) {
-        final MimeType constant = CONSTANTS.get(value);
-        if (constant == null) {
-            throw new IllegalArgumentException(value);
-        } else {
-            return constant;
-        }
+        return Arrays.stream(MimeType.values())
+                .filter(enumValue -> enumValue.value.equals(value))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("Unexpected value '" + value + "'"));
     }
 }
diff --git a/open-api/README.md b/open-api/README.md
deleted file mode 100644
index ed8c51663b487526ac666ee185102aa6a9aa1ec1..0000000000000000000000000000000000000000
--- a/open-api/README.md
+++ /dev/null
@@ -1,47 +0,0 @@
-### OpenAPI Model Generation
-
-This module generates model classes from the open-api specification of the submission api.
-
-Usage: ``mvn compile exec:java`` generates all models into the package ``de.fitko.fitconnect.api.domain.model.submission`` under
-**target/generated-sources/openapi/gen**.
-
-### Config
-
-The relevant config parameters are listed below.
-
-````xml
-
-<configuration>
-    <!-- open api spec url -->
-    <inputSpec>${submission-api.baseurl}/${submission-api.version}/${submission-api.spec}</inputSpec>
-
-    <!-- language generator -->
-    <generatorName>java</generatorName>
-
-    <!-- validation is currently disabled, otherwise the generation fails due to duplicate entries -->
-    <skipValidateSpec>true</skipValidateSpec>
-
-    <!-- use jackson annotations -->
-    <library>resttemplate</library>
-
-    <!-- target package name -->
-    <modelPackage>de.fitko.fitconnect.api.domain.model.submission</modelPackage>
-
-    <!-- target folder to write files into -->
-    <configOptions>
-        <sourceFolder>../../../src/main/java</sourceFolder>
-    </configOptions>
-</configuration>
-
-````
-
-### Draft/Todo PostProcessing
-
-The ``de.fitko.fitconnect.api.postprocessing.ModelClassPostProcessor`` is running in a maven execute step and 
-replaces all comments and unwanted annotations.
-
-Currently, there are some @Nullable and @NonNull annotations from ```javax.annotations``` that need to be replaced.
-
-In a further step the cleaned and post-processed model classes can be updated in the original ``api/domain/model``
-package of the ``api`` module via the maven resource plugin.
-
diff --git a/open-api/pom.xml b/open-api/pom.xml
deleted file mode 100644
index 18466de24b708f177edc15353b385be7e76684cf..0000000000000000000000000000000000000000
--- a/open-api/pom.xml
+++ /dev/null
@@ -1,129 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <parent>
-        <artifactId>sdk-java</artifactId>
-        <groupId>de.fitko.fitconnect.sdk</groupId>
-        <version>1.0.0-SNAPSHOT</version>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
-
-    <artifactId>open-api</artifactId>
-    <packaging>jar</packaging>
-
-    <properties>
-        <submission-api.baseurl>https://schema.fitko.de/fit-connect/submission-api</submission-api.baseurl>
-        <submission-api.version>1.0.7</submission-api.version>
-        <submission-api.spec>submission-api.yaml</submission-api.spec>
-    </properties>
-
-    <dependencies>
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-annotations</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-databind</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>io.swagger</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>1.6.6</version>
-        </dependency>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <scope>compile</scope>
-        </dependency>
-        <dependency>
-            <groupId>javax.annotation</groupId>
-            <artifactId>javax.annotation-api</artifactId>
-            <version>1.3.2</version>
-        </dependency>
-        <dependency>
-            <groupId>com.google.code.findbugs</groupId>
-            <artifactId>jsr305</artifactId>
-            <version>3.0.2</version>
-        </dependency>
-        <dependency>
-            <groupId>ch.qos.logback</groupId>
-            <artifactId>logback-classic</artifactId>
-        </dependency>
-    </dependencies>
-
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.openapitools</groupId>
-                <artifactId>openapi-generator-maven-plugin</artifactId>
-                <version>6.0.1</version>
-                <executions>
-                    <execution>
-                        <goals>
-                            <goal>generate</goal>
-                        </goals>
-                        <configuration>
-                            <inputSpec>${submission-api.baseurl}/${submission-api.version}/${submission-api.spec}
-                            </inputSpec>
-                            <generatorName>java</generatorName>
-                            <generateApis>false</generateApis>
-                            <skipValidateSpec>true</skipValidateSpec>
-                            <generateApis>false</generateApis>
-                            <generateModelDocumentation>false</generateModelDocumentation>
-                            <generateModelTests>false</generateModelTests>
-                            <generateSupportingFiles>false</generateSupportingFiles>
-                            <library>resttemplate</library>
-                            <modelPackage>de.fitko.fitconnect.api.domain.model.submission</modelPackage>
-                            <configOptions>
-                                <sourceFolder>gen</sourceFolder>
-                            </configOptions>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
-            <plugin>
-                <groupId>org.codehaus.mojo</groupId>
-                <artifactId>exec-maven-plugin</artifactId>
-                <version>3.1.0</version>
-                <configuration>
-                    <mainClass>de.fitko.fitconnect.api.postprocessing.ModelClassPostProcessor</mainClass>
-                    <workingDirectory>postprocessing</workingDirectory>
-                    <arguments>
-                        <argument>target/generated-sources/openapi/gen/de/fitko/fitconnect/api/domain/model/submission
-                        </argument>
-                    </arguments>
-                </configuration>
-            </plugin>
-            <!--
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-resources-plugin</artifactId>
-                <version>3.2.0</version>
-                <executions>
-                    <execution>
-                        <id>copy-resource-one</id>
-                        <phase>generate-sources</phase>
-                        <goals>
-                            <goal>copy-resources</goal>
-                        </goals>
-                        <configuration>
-                            <outputDirectory>${project.basedir}/../api/src/main/java/de/fitko/fitconnect/api/domain/generated
-                            </outputDirectory>
-                            <resources>
-                                <resource>
-                                    <directory>
-                                        target/generated-sources/openapi/gen/de/fitko/fitconnect/api/domain/model/submission
-                                    </directory>
-                                </resource>
-                            </resources>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>-->
-        </plugins>
-    </build>
-
-
-</project>
\ No newline at end of file
diff --git a/open-api/src/main/java/de/fitko/fitconnect/api/postprocessing/ModelClassPostProcessor.java b/open-api/src/main/java/de/fitko/fitconnect/api/postprocessing/ModelClassPostProcessor.java
deleted file mode 100644
index ea5203dba4095509b5591697c5ddda712d49dc32..0000000000000000000000000000000000000000
--- a/open-api/src/main/java/de/fitko/fitconnect/api/postprocessing/ModelClassPostProcessor.java
+++ /dev/null
@@ -1,91 +0,0 @@
-package de.fitko.fitconnect.api.postprocessing;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.File;
-import java.io.FileWriter;
-import java.io.IOException;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.Set;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
-
-public class ModelClassPostProcessor {
-
-    private static final Logger logger = LoggerFactory.getLogger(ModelClassPostProcessor.class);
-
-    public static void main(final String[] args) {
-
-        final ModelClassPostProcessor postProcessor = new ModelClassPostProcessor();
-
-        final var dir = args[0]; // -modelPath
-
-        postProcessor.readModelsToStrings(dir)
-                .stream()
-                .map(ModelClassPostProcessor::replaceContent)
-                //.peek(pair -> logger.info(pair.content))
-                .forEach(ModelClassPostProcessor::writeFiles);
-    }
-
-    private static ModelPair replaceContent(final ModelPair pair) {
-        String content = pair.content;
-        // Remove all Comments
-        content = content.replaceAll("\\/\\*([\\S\\s]+?)\\*\\/", "");
-        content = content.replaceAll("(?s)/\\*.*?\\*/", "");
-        // Remove unwanted annos
-        content = content.replaceAll("@ApiModel([\\w]+)((.*))", "");
-        content = content.replaceAll("@ApiModelProperty([\\w]+)((.*))", "");
-        content = content.replaceAll("Generated([\\w]+)((.*))", "");
-        // Replace javax
-        //content = content.replaceAll("Nonnull([\\w]+)((.*))", "");
-        //content = content.replaceAll("(@\([\\w]+)\\((.*?)\\)(?:\s|$))", "");
-        return new ModelPair(pair.originalPath, content);
-    }
-
-    public Set<ModelPair> readModelsToStrings(final String dir) {
-        return Stream.of(new File(dir).listFiles())
-                .filter(file -> !file.isDirectory())
-                .peek(file -> logger.info("Postprocessing model {}", file.getName()))
-                .map(file -> new ModelPair(file.toPath(), getFileAsString(file)))
-                .collect(Collectors.toSet());
-    }
-
-    private String getFileAsString(final File file) {
-        try {
-            return Files.readString(file.toPath(), StandardCharsets.UTF_8);
-        } catch (final IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    private static void writeFiles(final ModelPair modelPair) {
-        try {
-            final File f = new File(modelPair.originalPath.toFile().getAbsolutePath());
-            final FileWriter fw = new FileWriter( f, false);
-            fw.write(modelPair.content);
-            fw.flush();
-            fw.close();
-        } catch (final IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-
-    private static class ModelPair {
-        final Path originalPath;
-        final String content;
-
-        ModelPair(final Path originalPath, final String content) {
-            this.originalPath = originalPath;
-            this.content = content;
-        }
-
-        @Override
-        public String toString() {
-            return content;
-        }
-    }
-}
diff --git a/pom.xml b/pom.xml
index 59526730d00525ec7791d9b8d634f7584270c6f0..c5d359fd85bcb4dbd23a2ff7bac7644238c0891f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -46,7 +46,6 @@
         <module>api</module>
         <module>core</module>
         <module>client</module>
-        <module>open-api</module>
     </modules>
 
     <dependencyManagement>
@@ -136,13 +135,6 @@
                 <version>${junit.version}</version>
                 <scope>test</scope>
             </dependency>
-            <dependency>
-                <groupId>org.junit</groupId>
-                <artifactId>junit-bom</artifactId>
-                <version>${junit.version}</version>
-                <type>pom</type>
-                <scope>import</scope>
-            </dependency>
             <dependency>
                 <groupId>org.mockito</groupId>
                 <artifactId>mockito-core</artifactId>
@@ -172,24 +164,25 @@
     </repositories>
 
     <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-            </plugin>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <version>${maven-surefire-plugin.version}</version>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-failsafe-plugin</artifactId>
-                <version>${maven-failsafe-plugin.version}</version>
-            </plugin>
-        </plugins>
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-compiler-plugin</artifactId>
+                    <version>${maven-compiler-plugin.version}</version>
+                </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-surefire-plugin</artifactId>
+                    <version>${maven-surefire-plugin.version}</version>
+                </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-failsafe-plugin</artifactId>
+                    <version>${maven-failsafe-plugin.version}</version>
+                </plugin>
+            </plugins>
+        </pluginManagement>
     </build>
 
 </project>
\ No newline at end of file