For Simple Products, everything works as usual. You provide the Product Identifiers values in the Description Policy and Item Specifics configurations, after which the values are sent to eBay when the Products are updated/listed on Channel.
The Brand and MPN values are required to be provided both in Item Specifics and Description Policy.
However, the ePID can be provided only for Simple Product.
But what is the mechanism for Multi-Variational Products?
The main distinction of providing Product Identifiers for Multi-Variational Products is the requirement to provide separate values for each Variation.
The Multi-Variational Products can be logically divided into 2 groups:
- Configurable and Grouped Products
The concept of these Magento Product types is the most suitable for eBay structure of Variational Products as each Variation has a particular Identifier (UPC/EAN/ISBN, etc). You should just provide the settings in Description Policy and Item Specifics to allow M2E Pro to retrieve the values provided in the Child Products and send them to eBay.
- Simple Product with Custom Options and Bundle Product
The Variations of the Simple with Custom Options product do not contain their individual Identifiers (UPC/EAN/ISBN, etc.), as they are not separate Simple Products. So, it is unclear for the system which data should be taken for Variations. If it's taken from the Parent Product, it will be one Identifier for all of the Variations, which is not correct.
On the other hand, each Variation of Bundle Product is a combination of several Simple products, where each of the Simples contains its own Identifier. So, one Variation of the Bundle Product has several Identifiers. Again, it is unclear which one should be sent to eBay and which should be ignored.
To solve this issue, you can use a Manage Variations pop-up which enables you to provide the Identifiers for each Variation separately.
Please note, the Manage Variations option is available for all Multi-Variational Products. In case, you specified eBay Catalog Identifiers for Configurable and Grouped Products via Manage Variations pop-up for separate Variations, the values for other Variations will be taken from there too and Description Policy settings will be ignored.
Please, be attentive while providing Product Identifiers for Multi-Variational Items and avoid mixing of values. So, if you provide the MPN for Yellow Variation of your Item, but for Green Variation this value is not provided, eBay can return you a notification about incorrect settings. Thus, you should use the MPN Product Identifier for all the Variations of the particular Product.
Moreover, in case the MPN value has the same value in the Description Policy and Item Specifics configuration, M2E Pro will not send the value provided in the Item Specifics to prevent duplication of values on eBay. So, only the value from the Description Policy will be sent to eBay.
Note, if MPN value is set for the Item and already available on eBay, it cannot be changed during the Revise action. In this case, eBay system will return you an error.Revise action. In this case, eBay system will return you an error.