Sample, synthetic data: the validation report (rows in = clean + exceptions + duplicates removed).
Sample, synthetic data: the exceptions file. Rows that break the agreed rules are flagged with a reason instead of guessed.
Sample, synthetic data: the change log recording every edit, cell by cell, before and after.
Sample, synthetic data: a 10-row messy ad-spend export cleaned to 6 rows, with 1 duplicate removed and 3 rows set aside with reasons.
