ACD200 Exam Dumps - Appian Senior Developer Questions and Answers

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

The @Version annotation is used to avoid the collision of data from an application when more than one user is editing the same record in a database. The @Version annotation enables optimistic locking, which is a mechanism to detect and prevent concurrent updates on the same record. Optimistic locking assumes that multiple transactions can complete without affecting each other, and that therefore transactions do not need to lock data resources until they are ready to commit. However, if a transaction tries to commit changes to a record that has been modified by another transaction since it was last read, an OptimisticLockException is thrown and the transaction is rolled back. The @Version annotation can be applied to a field or property of a CDT that stores a numeric value. This value is used as a version number that is automatically incremented by Appian every time the record is updated. References: Does Appian support @Version JPA Annotation?, JPA - Optimistic Locking and Use of @Version annotation

When troubleshooting a process model instance with an error in a node, two options that can provide more information about the error are to view the Process Details dialog and to view the properties dialog of the affected node. The Process Details dialog shows the status, history, and variables of the process instance, as well as any errors or warnings that occurred during the execution. The properties dialog of the affected node shows the configuration, inputs, outputs, and expressions of the node, as well as any errors or warnings that occurred during the evaluation. These options can help to identify the cause and location of the error, and to apply any necessary fixes. Therefore, the correct answers are B and D.

References:

• [Process Details Dialog]
• [Properties Dialog]