The problem may occur if Items on the channel are updated by more than one synchronization source. This issue is called double synchronization which often leads to the incorrect product data update on the channel.
The problem may occur if:
- You switched to a new hosting server and the old server goes on working.
Please check with your developers if the old server still working and if it does make sure to disable it.
- The items are updated on the channel by another Magento instance with M2E Pro installed such as a developer or test environment.
Please check if your developers use Magento with M2E Pro where the same channel account is added. In this case, you need to disable all synchronization rules for a developer’s instance. Moreover, if you don’t plan to use a developer’s account, it’s better to delete it.
- You use M2E Pro and another tool for inventory management simultaneously.
To solve the problem, please ensure that your inventory is not updated by any different synchronizations running simultaneously. For eBay, please navigate My eBay > All lists > Accounts > Site Preferences > Third-party authorizations. For Amazon, go to Seller Central > Settings > User permissions > Third party developer and apps. If you find any other instance, please make sure to disable the automatic synchronization there.
For more information, you are welcome to contact our Support Team at firstname.lastname@example.org.