Salesforce Sharing and Visibility Certification Practice Exam

Which scenario may lead to locking errors during the processing of record updates?

1. Updates to child records that have the same parent records are processed simultaneously.

2. Updates to parent and child records processed in the same batch.

3. Simultaneous processing of parent and child records in different threads.

4. Parent and child records processed synchronously in the same threads.

The correct answer is: Updates to child records that have the same parent records are processed simultaneously.

The scenario that leads to locking errors during the processing of record updates involves updates to child records that have the same parent records being processed simultaneously. In Salesforce, when multiple operations are performed on the same parent record or related child records at the same time, it can create lock contention. Specifically, when a child record associated with a parent record is being updated simultaneously in concurrent operations, Salesforce ensures data integrity by locking the parent record. This can lead to locking errors if both processes attempt to update the child record and reference the parent simultaneously, resulting in a conflict that prevents one of the updates from completing. Locking errors arise primarily in situations where one transaction holds a lock on a record while another transaction tries to obtain a conflicting lock on the same or related records. This scenario emphasizes the importance of understanding record locking behaviors, especially in environments with complex relationships and high data update volumes. The other scenarios, while they could cause locking issues under certain circumstances, do not specifically illustrate the same level of contention arising from simultaneous updates to child records with a shared parent, making the first scenario the most indicative of potential locking errors.