> 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/troubleshooting-and-support/common-error-patterns.md).

# Common Error Patterns

### Connection Test Fails

Check URL/API path, user, password, Magento permissions, TLS, WAF, and response status. Do not use OAuth in version 27.10.0.16 without a fix.

### Download Cockpit Shows a Blocker

Run Refresh Preconditions and address the Blocking Reason. Common causes are missing connection, initial data, or mappings.

### Order Is Not Downloaded

Check Allows Order Download, Downloadable Order Status, Start From Order ID, and API filters. The Selected check mark is not authoritative.

### Order Without the Correct Customer

Check customer mapping, default customers, Create Unknown Customer, and the template; manually verify name/address.

### Product Without Price/Variant

Check item type, Attribute Set, axes, option values, and the documented variant limits.

### Incorrect Inventory

Check MSI source/location, SKU, Item Ledger Entries, negative quantity, and the last batch.

### Credit Memo Creates the Wrong Document

{% hint style="danger" %}
Known bug: creates a Blanket Order instead of a Sales Credit Memo. Stop the action and use the approved manual process.
{% endhint %}


---

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