When subscribed to the free plan of SAP Business Application Studio, you can only run one dev space at a time. A dev space is a development environment that contains the tools and runtimes for a specific development scenario. You can create up to two dev spaces with the free plan, but you can only have one dev space in the RUNNING state at a time. If you want to switch to another dev space, you need to stop the current one first12. This is one of the restrictions of the free plan, which is intended for trial and evaluation purposes. If you want to run more dev spaces simultaneously, you need to upgrade to a paid plan345. References:

• 1: Set Up SAP Business Application Studio | SAP Tutorials
• 2: Application Plans | SAP Help Portal
• 3: SAP Business Application Studio - Trial Account Restrictions
• 4: SAP Business Application Studio | SAP Help Portal
• 5: Dev Spaces in SAP Business Application Studio | SAP Blogs

The correct way for an application developed on SAP Business Application Studio to use data directly from a back-end system is to consume an external data service. This can be done by using the Service Center in SAP Business Application Studio, which simplifies the connectivity to external data sources, enables data source exploration from different providers, and integrates the data source into the application in development. For example, you can consume an external service from SAP S/4HANA by adding the Business Partner API to your application and adding the Business Partner entity to your application service. References:

• Connect to External Data Sources with SAP Business Application Studio
• Consuming an External Service From SAP S/4HANA - SAP Learning

 You can use CI/CD job webhook data to automatically trigger a build for that CI/CD job whenever someone pushes changes to the repository. A webhook is a way of notifying a service about an event that occurred in another service, such as a code change in a Git repository. By configuring a webhook between your repository and SAP Continuous Integration and Delivery, you can automate your builds and ensure that your application is always up to date with the latest code changes. The other options are not correct, because they are not the purpose of CI/CD job webhook data. To email you whenever changes are pushed to the repository, you can use the notification settings in your Git service. To automatically sync your local repository whenever changes are pushed to the repository, you can use the pull command in the terminal or the Sync & Share action in the Project Explorer. References:

• Managing the Application’s Lifecycle with CI/CD Service
• SAP Help Portal
• Introduction to SAP Continuous Integration and Delivery service for SAP …