After changing a Data Source due to an error, what action should you take next?

• A. Reload the data files.
• B. Re-transform the data.
• C. Click Validate.
• D. Refresh your page.

Answer: (A)

Reloading the data files is the next step because changing the data source means the system must read fresh data from the corrected source rather than using cached or previously ingested data. This ensures the data that feeds transformations and validations comes from the fixed source. Simply validating or refreshing the page won’t pull in new data, and re-transforming without reloading wouldn’t address the underlying data import from the corrected source. After the reload, you would proceed with transformations if needed.