Your task
Someone asks you to make the order table one row per month. Is that cleaning? Describe the risk of an automatic correction.
Hint
Distinguish formatting fixes from changes in business meaning. Specify what evidence authorizes each correction.
Worked solution
No. One row currently means one order. Monthly aggregation creates a new analytical dataset and loses order-level detail. Keep both tables, document the transformation and reconcile completed cents before and after.
What to hand over
Provide raw source fingerprint, old/new values, rule, evidence, affected row IDs and validation totals. A clean-looking table alone is insufficient.
Try the activity before reading its reference. Keep your sources, commands and assumptions with your work. Companion activities are unsaved self-practice and do not award a certificate or change lesson progress.