When performing a massive synchronization, the module sends eBay a compressed XML file containing the data of the products to be sent.

eBay accepts a file with a maximum size of 15 MB, after which it will return the error “The File you tried to upload is too large” or “FILE EXCEEDS MAXIMUM DIMENSIONS”.

In most cases this threshold is compatible with the sending of tens of thousands of products, but you may get the error in case of descriptions or templates particularly
complex and full of text.

It is possible to reduce the size of the :

• By reducing the size of the HTML in the template sent to eBay (by referring, for example, any information notes via links to dedicated pages within the eBay store).
  By “breaking” the synchronization into several updates related to a smaller chunks / number of products by disabling some categories prior launching the sync.
• By Changing the type of synchronization from “Update all data” to “Update  quantity/price only” (this will avoid sending the description, saving space  in compressed XML file.