[SOLVED] Caused by: java.lang.IllegalArgumentException: Job name must be specified in case of multiple jobs

I'm migrating Spring Boot Batch App from version 2.7.1 to 3.2.10 and getting below error. Documentation doesn't suggest how to solve the issue. Can someone please suggest?

Error:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jobLauncherApplicationRunner' defined in class path resource [org/springframework/boot/autoconfigure/batch/BatchAutoConfiguration.class]: Job name must be specified in case of multiple jobs
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1806) ~[spring-beans-6.1.13.jar:6.1.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:600) ~[spring-beans-6.1.13.jar:6.1.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:522) ~[spring-beans-6.1.13.jar:6.1.13]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:337) ~[spring-beans-6.1.13.jar:6.1.13]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.1.13.jar:6.1.13]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:335) ~[spring-beans-6.1.13.jar:6.1.13]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.1.13.jar:6.1.13]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:975) ~[spring-beans-6.1.13.jar:6.1.13]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:971) ~[spring-context-6.1.13.jar:6.1.13]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:625) ~[spring-context-6.1.13.jar:6.1.13]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-3.2.10.jar:3.2.10]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:456) ~[spring-boot-3.2.10.jar:3.2.10]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:335) ~[spring-boot-3.2.10.jar:3.2.10]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1363) ~[spring-boot-3.2.10.jar:3.2.10]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1352) ~[spring-boot-3.2.10.jar:3.2.10]
    at com.example.demo.Application.main(Application.java:11) ~[classes/:na]
Caused by: java.lang.IllegalArgumentException: Job name must be specified in case of multiple jobs
    at org.springframework.util.Assert.isTrue(Assert.java:111) ~[spring-core-6.1.13.jar:6.1.13]
    at org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.afterPropertiesSet(JobLauncherApplicationRunner.java:115) ~[spring-boot-autoconfigure-3.2.10.jar:3.2.10]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1853) ~[spring-beans-6.1.13.jar:6.1.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1802) ~[spring-beans-6.1.13.jar:6.1.13]
    ... 15 common frames omitted


Process finished with exit code 1

ChilJobConfig.java

package com.example.demo;

import org.springframework.batch.core.Job;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.job.builder.JobBuilder;
import org.springframework.batch.core.repository.JobRepository;
import org.springframework.batch.core.step.builder.StepBuilder;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.PlatformTransactionManager;

@Configuration
public class ChildJobConfiguration {
    @Autowired
    private JobRepository jobRepository;
    @Autowired
    private PlatformTransactionManager transactionManager;


    @Bean
    public Step step1a() {
        return new StepBuilder("step1a", jobRepository)
                .tasklet((contribution, chunkContext) -> {
                    System.out.println("\t>>This is step 1a");

                    return RepeatStatus.FINISHED;
                }, transactionManager).build();
    }

    @Bean
    public Job childJob() {
        return new JobBuilder("childJob", jobRepository)
                .start(step1a())
                .build();
    }
}

ParentJobConfig.java

package com.example.demo;

import org.springframework.batch.core.Job;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.job.builder.JobBuilder;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.batch.core.repository.JobRepository;
import org.springframework.batch.core.step.builder.JobStepBuilder;
import org.springframework.batch.core.step.builder.StepBuilder;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.PlatformTransactionManager;

@Configuration
public class ParentJobConfiguration {

    @Autowired
    private JobRepository jobRepository;
    @Autowired
    private PlatformTransactionManager transactionManager;

    @Autowired
    private Job childJob;

    @Autowired
    private JobLauncher jobLauncher;

    @Bean
    public Step step1() {
        return new StepBuilder("step1", jobRepository)
                .tasklet((contribution, chunkContext) -> {
                    System.out.println(">> This is step 1");
                    return RepeatStatus.FINISHED;
                }, transactionManager).build();
    }

    @Bean
    public Job parentJob(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
        Step childJobStep = new JobStepBuilder(new StepBuilder("childJobStep", jobRepository))
                .job(childJob)
                .launcher(jobLauncher)
                .build();

        return new JobBuilder("parentJob", jobRepository)
                .start(step1())
                .next(childJobStep)
                .build();
    }
}

MainApp.java

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}

application.properties

spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.schema=schema-mysql.sql

spring.batch.job.names=parentJob

Caused by: java.lang.IllegalArgumentException: Job name must be specified in case of multiple jobs - Spring Batch