Welcome to your interview.
The question is on your right: Troubleshoot a Data Mapping Issue. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
You are working on a data migration or mapping change in a pipeline and the target tables are not matching the source system. Some fields are landing in the wrong columns, derived values are off, and downstream reports are showing inconsistent counts. The issue needs to be isolated quickly so you can correct the mapping and prevent bad data from propagating.
Describe a time you had to troubleshoot a data mapping or data migration issue.