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# Error: This SKU has not been listed on Amazon - Amazon Marketplace Plus

When synchronizing offers with Amazon, you may encounter the following error:  

**"This SKU has not been listed on Amazon"**

This error indicates that the **SKU has not yet been added** to your Amazon account, and therefore cannot be updated.

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## Possible Causes

1. **The SKU is not yet present in your Amazon account**  
   → The module cannot update an offer that does not exist.  

2. **The option [Matching/Correspondence](https://doc.common-services.com/en/article/sending-syncing-offers-amazon-marketplace-plus-1pz0psa/#3-matching) is not enabled**  
   → Without this option, the module cannot link your SKU to an existing product in the Amazon catalog.  

3. **The [Report Listing Inventory scheduled task](https://doc.common-services.com/en/article/scheduled-tasks-amazon-marketplace-plus-1j9uidk/#4-report-listing-inventory-url-to-fetch-save-data-report-listing-inventory) is not running**  
   → The module does not know which products are already present in your Amazon account.  
   → As a result, the error may appear even if the SKU is already listed in your inventory.

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## How to Fix

### 1. Enable the Matching Option

If the product already exists in the Amazon catalog but is not yet on your account:

* Enable the **Matching** option  
* Resend the offers feed  

![Matching Option](https://storage.crisp.chat/users/helpdesk/website/-/3/f/a/8/3fa8ee645cd13200/screenshot372_15hohrd.jpg)

Amazon will then try to associate your SKU with an existing product (via EAN/UPC).  

📘 See doc: [Send and Sync Offers](https://doc.common-services.com/en/article/sending-syncing-offers-amazon-marketplace-plus-1pz0psa/)

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### 2. Configure the Report Listing Inventory Scheduled Task

This task is essential: it allows the module to know **which offers already exist** in your Amazon account.

* Properly configure the [Report Listing Inventory scheduled task](https://doc.common-services.com/en/article/scheduled-tasks-amazon-marketplace-plus-1j9uidk/#4-report-listing-inventory-url-to-fetch-save-data-report-listing-inventory).  
* Recommended frequency: **every 4 hours**.  

||| ⚠️ Why this cron job is important:  
||| If matching is applied to an offer that already exists, Amazon may overwrite certain product details (e.g. color, size).

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## Summary

* This error means: the SKU is not (yet) listed in your Amazon account.  
* Solutions:  
1. Enable **Matching** to link your SKU to an existing Amazon product.  
2. Configure the **Report Listing Inventory scheduled task** so the module knows which products are already listed.