Given the code fragment:

How are transactions managed?

Given the following class definition with numbered lines:

How do you specify to use this mock CDI bean implementation instead of the regular implementation class?

For an Item to be enabled for back-to-back order process, which attribute do you need to set?

Which of these can be a JPA entity?

A third-party service equipment is used for various purposes in a manufacturing facility and needs to be overhauled once a year. This equipment is charged based on its consumption without a project dependency.
At this point, it should be transferred out of the vendor's warehouse for maintenance and then returned back in the future depending upon the requirement.
The material stock transfer should happen with an offline approval and with an account alias as a logical reference.
What is the ideal way to handle this process?