Have several order and payment exports that disagree? I combine up to five related CSV files (1,000,000 rows total, 30 columns per file) into one checked table. We agree on the shared identifier and rules before work begins. You receive one consolidated CSV, a review list with source locations, a duplicate log, and checked row counts and totals. One revision is included. Delivery is within one week after the files and rules are confirmed. See the five-file demo: https://tidemark-export-rescue.netlify.app/samples/sample-report.html Send the file count, rough row count, column names and the result you need. I will confirm the $99 scope or send a written quote for a larger job before payment.