Step-1: Create datasource and make the database Integration with RHPAM 7.5.1 by adding the given properties into </system-properties>. ~~~~~~~~~~~~~~ <property name="org.kie.server.persistence.ds" value="java:jboss/datasources/postgresDatasource"/> <property name="org.kie.server.persistence.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/> ~~~~~~~~~~~~~ step-2: Import the customer's jar 'AutoAckProject-1.0.0-SNAPSHOT.jar' in the PAM from the artifact of the project setting. step-3: Create the KIE server by configuring the deployment unit from the 'Execution Servers' in the Menu tab. ~~~~~~~~~~~~ Add deployment unit Select the jar from the GAV column --> next --> Finish ~~~~~~~~~~~~~ step-4: Start the process from the 'Process Definitions' without passing any value. ~~~~~~~~~~~~~ var1 should leave empty to get the "Caused by: java.lang.NumberFormatException: For input string: " exception. ~~~~~~~~~~~~~ step-5: Abort the process from the 'Process Instances'. step-6: Open the 'Jobs' inside the ' Manage' tab of the 'Menu' tab. step-7: Create a 'New Job' with the given these two parameters. ~~~~~~~~~~~~~~~~~~~~ Business Key : AnyNameHere Type* : org.jbpm.executor.commands.error.ProcessAutoAckErrorCommand ~~~~~~~~~~~~~~~~~~~