Consider these points when submitting custom workflows:

• The .JAR must be built on JDK17. Ensure that the classes are built on JDK17 and no unsupported features are used.
• Set the scope of Workflow SDK dependencies to provided. For more information, see topic Dependency Scope.

  Example:

  
  <dependency>
  	<groupId>com.reltio.workflow</groupId>
  	<artifactId>workflow-api</artifactId>
  	<version>2025.2.0.0</version>
  	<scope>provided</scope>
  </dependency>
  
  <dependency>
  	<groupId>com.reltio.workflow</groupId>
  	<artifactId>workflow-custom</artifactId>
  	<version>2025.2.0.0</version>
  	<scope>provided</scope>
  </dependency>
  

• The custom workflow must use the AWS SDK to run Lambda functions with AWS libraries as dependencies.

  Important: AWS SDK for Java v1 (com.amazonaws) will reach end of support on December 31, 2025. If you're still using v1, begin planning a migration to AWS SDK v2 (software.amazon.awssdk). For more information, see the

  AWS announcement.

  You can use the sample pom.xml file given as a template for building custom workflow using Maven.

  Sample: pom.xml

  <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">
      <modelVersion>4.0.0</modelVersion>
  
      <groupId>com.reltio.customername</groupId>
      <artifactId>custom-workflow</artifactId>
      <version>1.0.7</version>
  
      <properties>
          <aws.sdk.version>2.31.0</aws.sdk.version>
          <jdk>17</jdk>
      </properties>
  
      <dependencies>
  
          <!-- AWS SDK v2 modules -->
          <dependency>
              <groupId>software.amazon.awssdk</groupId>
              <artifactId>lambda</artifactId>
              <version>${aws.sdk.version}</version>
          </dependency>
  
          <dependency>
              <groupId>software.amazon.awssdk</groupId>
              <artifactId>s3</artifactId>
              <version>${aws.sdk.version}</version>
          </dependency>
  
          <dependency>
              <groupId>software.amazon.awssdk</groupId>
              <artifactId>kms</artifactId>
              <version>${aws.sdk.version}</version>
          </dependency>
  
          <!-- Add other AWS services as needed -->
          <!-- For example: dynamodb, sns, sqs, etc. -->
  
          <!-- Reltio Workflow SDK -->
          <dependency>
              <groupId>com.reltio.workflow</groupId>
              <artifactId>workflow-api</artifactId>
              <version>2025.2.0.0</version>
              <scope>provided</scope>
          </dependency>
  
          <dependency>
              <groupId>com.reltio.workflow</groupId>
              <artifactId>workflow-custom</artifactId>
              <version>2025.2.0.0</version>
              <scope>provided</scope>
          </dependency>
  
          <!-- Optional: GSON (set as provided) -->
          <dependency>
              <groupId>com.google.code.gson</groupId>
              <artifactId>gson</artifactId>
              <version>2.8.4</version>
              <scope>provided</scope>
          </dependency>
  
      </dependencies>
  
      <build>
          <plugins>
              <plugin>
                  <groupId>org.apache.maven.plugins</groupId>
                  <artifactId>maven-compiler-plugin</artifactId>
                  <configuration>
                      <source>${jdk}</source>
                      <target>${jdk}</target>
                  </configuration>
              </plugin>
  
              <plugin>
                  <groupId>org.apache.maven.plugins</groupId>
                  <artifactId>maven-shade-plugin</artifactId>
                  <version>3.2.1</version>
                  <configuration>
                      <createDependencyReducedPom>false</createDependencyReducedPom>
                  </configuration>
                  <executions>
                      <execution>
                          <phase>package</phase>
                          <goals>
                              <goal>shade</goal>
                          </goals>
                      </execution>
                  </executions>
              </plugin>
          </plugins>
      </build>
  
      <repositories>
          <repository>
              <id>reltio-libs-release</id>
              <name>Reltio release repository</name>
              <url>https://repo-dev.reltio.com/content/repositories/public</url>
          </repository>
      </repositories>
  </project>
  
  

• The .JAR file must include the dependencies packaged, which are listed in the pom.xml file. For more information, see topic Apache Maven Shade Plugin.
• Add the scope to "", if there are similar dependencies in the AWS SDK and Workflow API.

  Ensure that the version is one similar to 2.31.0.

  See the example:

  <dependency>
      <groupId>software.amazon.awssdk</groupId>
      <artifactId>s3</artifactId>
      <version>2.31.0</version>
  </dependency>
  
  <dependency>
      <groupId>software.amazon.awssdk</groupId>
      <artifactId>kms</artifactId>
      <version>2.31.0</version>
  </dependency>
  
  <dependency>
      <groupId>software.amazon.awssdk</groupId>
      <artifactId>aws-core</artifactId>
      <version>2.31.0</version>
  </dependency>
  

• Set the scope to "provided", when you use the GSON library.

  See the example:

  
  <dependency>
      <groupId>com.google.code.gson</groupId>
      <artifactId>gson</artifactId>
      <version>2.8.4</version>
      <scope>provided</scope>
  </dependency>
  

• There must not be any unused dependencies.
• Cover at least 70% of your code with unit/integration tests.