Do I have to ask the module to include the attribute IDs into combination URLs?

In the "Feed data options" tab of the "Feed management" module section, if you choose to export each combination as a product in its own right, the module asks you if you want to include the attribute ID into the combination URLs:

To know how to configure this option, go to the page of one of your products that have combinations.

Example:

If this is not already the case, display a combination that is not the default combination, by clicking on an attribute (like a color, a size, etc...).

Example:

In the address bar, look if the attribute IDs are displayed (numbers in front of each attribute).

Example:

If its the case, then select YES for the "Include the attribute ID into the combination URL?" option:

If the attribute IDs don't appear, then select NO:

This option keeps the consistency between what the module will send to Facebook and your site. Indeed, Facebook proceeds (especially for the first validation) to "manual" checks, that is to say, performed by real people. If your theme (or a third-party module) rewrites product combination URLs without attribute IDs (for SEO purposes for example), and the module sends Facebook combination URLs with attribute IDs, then PrestaShop will not be able to do the correspondence and the agent will not see the correct product combination (PrestaShop, not knowing how to interpret the URL sent by Facebook, will actually display the default combination, whatever the combination really requested). Your feed will therefore be rejected. You must therefore send URLs strictly identical to those interpreted by your site. If your combination URLs are written with the attribute IDs, then you have to ask the module to write them like that. If your theme, for example, deletes the attribute IDs then they must not be included in the URLs of the product combinations sent to Facebook.