Explanation
The connected system is the object that allows to set an URL and key to be used in different integrations.
https://docs.appian.com/suite/help/22.3/Connected_System_Object.html

Explanation
Two valid suggestions regarding this process are:
* We should consider adding a timer exception which skips the "Edit/Credit Invoice" node after 24 hours.
This suggestion would improve the user experience by preventing users from editing or crediting an
* invoice that is too old or has been already processed by another system. A timer exception can be added to any activity node to specify a deadline for completing the task. If the deadline is reached, the process flow will follow the exception path instead of the normal path.
* We should add this process model as a related action on the Invoices record called "Edit Invoice." This suggestion would make it easier for users to access and execute this process from the context of a specific invoice record. A related action is a process model that can be initiated from a record or a record list in Tempo or sites. A related action can use record data as inputs and update record data as outputs. References: Timer Exception, Create Record Actions

Explanation
Peer Dev Review is the most efficient way to coach team members and improve code quality, because it allows developers to share feedback, learn from each other, and identify and fix issues before they become problems. Peer Dev Review also fosters collaboration, communication, and best practices among the team.
Peer Dev Review can be done using tools like Appian Designer or Appian Code Review. References: [Peer Dev Review], [Appian Code Review]

Explanation
The Number (Integer) data type should be chosen for the BOOK_ID, because it is a unique identifier for each book record. The Number (Integer) data type is used to store whole numbers without decimals, such as IDs, counts, or ordinal values. The Number (Integer) data type can also be used as a primary key for a CDT or a foreign key for referencing another CDT. References: [Number (Integer) Data Type], [CDT Primary Keys]