> ## Documentation Index > Fetch the complete documentation index at: https://docs.firstresonance.io/llms.txt > Use this file to discover all available pages before exploring further. # Overview > Use CSV imports to bulk-create or update records in ION. ION's import feature lets you upload a CSV file to create or update records in bulk. Instead of entering data one row at a time through the UI, you can prepare a spreadsheet offline and import it all at once. ## How imports work To start an import, navigate to **Imports** in the sidebar, then pick an import type from the **New Import** tab. The importer cards are grouped by category (**Production**, **Supply Chain**, **Quality**, and **OS**) to match where each record type lives in ION. Imports are processed **asynchronously**, so you can navigate away and continue working while the import runs. You receive a notification when the import completes or fails. Clicking **Start Import** on any card opens the import wizard, which walks you through **Upload**, **Match**, and **Review** steps. On the **Upload** step you can download the CSV template, toggle the importer's options (the option set varies by importer), or choose **Enter data manually** to type rows into the grid instead of uploading a file. The **Match** step maps your file's columns to ION fields. ION auto-maps each column to the field whose name it matches, and you can adjust any mapping in that column's **Maps To** dropdown: pick a different field, keep the column as a custom attribute, or skip the column so it isn't imported. Required fields must stay mapped. When you enter data manually instead of uploading, this step becomes a column picker where you choose which fields to include. On the **Review** step, ION shows your rows in an editable grid. Edit any cell inline, then use the validate control to check the data. ION flags each failing cell with its error and highlights the affected rows, so you can fix them and revalidate before importing. The control reads **Validate** before the first check and **Revalidate** after, and editing a validated file prompts you to revalidate before you can import. Import wizard Review step showing an editable grid with three rows flagged Name is required and a banner reading 3 issues in rows 1, 2, 3 Imports are **all-or-nothing**. If any row fails validation, no rows are written and you receive an error report. You never end up with a partially imported file. You can track the status of all imports from the **Import History** tab. Expand any failed job to see its per-row error messages, or click **Download** to pull the full error CSV. ## Video walkthrough The end-to-end import flow is the same for every importer: pick a type, download the template, upload your CSV, run validation, then commit. The walkthrough below uses the mBOM importer as an example.