# Connect your data

> Upload a CSV, see what we check, decide what to do with the rows we flag.

Section: Get started · HTML: https://app.multiplied.studio/docs/get-started/connect-your-data · Index: https://app.multiplied.studio/llms.txt

_This page is a structure-only placeholder: the Studio UI it describes is being redesigned, so step text and screenshots land with the new UI._

## The file

A CSV with a header row. UTF-8 is best; we detect other encodings and repair what we can. Up to 250 MB and 250,000 rows per upload.

_[Screenshot placeholder: Download the sample CSV, then upload yours]_

## What we check

- **Column headers** — present, unique, mappable to the design's fields.
- **Number of rows** — what you will be quoted for.
- **Missing values** — per column, so you know which field is affected.
- **Mojibake** — text that was saved in the wrong encoding (`é` for `é`); we suggest the repair.
- **Non-Latin scripts** — flagged so you can check the design's font covers them.

## What you decide

- **Re-upload** a corrected file.
- **Approve suggestions** (encoding repairs and the like) in one click.
- **Download the issues CSV** to fix rows outside the tool.
- **Continue without the flagged rows** — they are removed from this batch, not from your file.
- **Fallbacks** — leave a value blank and that recipient gets the design's fallback for that field.

_[Screenshot placeholder: Review screen: what we check on the left, your decisions on the right]_

> ⓘ Rows still flagged after verify? [rows-need-review-after-verify](/docs/troubleshooting/rows-need-review-after-verify).