> For the complete documentation index, see [llms.txt](https://docs.solutioo.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.solutioo.de/magento-2-api-connector/magento2_en_us/price-and-inventory-management/upload-inventory.md).

# Upload Inventory

The MSI upload sends SKU, Source Code, Quantity, and Stock Status for each item and assigned source.

### Prerequisites

* Inventory Sync Mode = Magento MSI
* Upload Inventory enabled
* Item marked as Magento product
* Valid SKU
* MSI sources actively mapped

### Single-Item Test

1. Determine item quantity per location.
2. Start the inventory upload on the item.
3. Check the Activity Log.
4. Verify Source Quantity in Magento.
5. Test frontend availability.

### Batch Run

**Upload All Pending Stock** or Upload Data processes pending inventory in batches.

{% hint style="warning" %}
For a trailing last batch, the synchronization status in version 27.10.0.16 may not update reliably. Do not rely exclusively on the BC checkmark; verify Magento and the log.
{% endhint %}

### Troubleshooting

Filter errors by SKU, source, and request; correct the mapping/quantity and resend only the affected items.


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