SierraVerified interview challenge
Review a customer return-label handler
Find defects that can create the wrong return label or tell a customer that an unfinished journey is complete.
Unlock with Full AccessThe challenge
The handler creates a prepaid label and replies to a customer. Its trace includes a timeout and a repeated delivery of the same event. Review the implementation against the ownership, confirmation and retry rules, then connect each defect to the customer's experience and the external state it leaves behind.
What you'll practise
Ownership and confirmation
Check that external actions belong to the authenticated customer and reflect their confirmed details.
Retry state
Follow what happens when an action succeeds but delivery of the reply is uncertain.
Return-label handler and retry traceCode included in the full challenge
Your code review
Explain each defect, its consequence and the proposed correction.
The code, instructions and feedback are included with Full Access.