There is no associated product found for configurable product

You get this error because the eBay item is mapped to magento configurable product, but there's no mapping between variation purchased by buyer and options in magento.

So you should manually resolve this situation by using Edit Order functionality: http://docs.m2epro.com/x/LgAJAQ for M2E Pro M1 and http://docs.m2epro.com/x/awItAQ for M2E Pro M2.

If you want to use the same settings for the similar subsequent orders, select appropriate check-box at the bottom of Order Edit page, then M2E will apply option mappings you set to all new orders with the same eBay item and the variation in order.

 

 

eBay Integration