I'm trying to load a custom extension synchronously.
When I go to my account, under the Tag Management tab, click on the tag that I want to load synchronously, toggle on the synchronous loading, toggle on utag.sync.js under save/publish and publish the extension; the file utag.sync.js is empty.
Is there anything else that I should do in order to see the tag that I want to load synchronously within utag.sync.js?
This synchronous option is for when the utag.js file is loaded synchronously on a page. It is legacy functionality now, as we always recommend async loading of the utag.js file.
More information on this option can be found here https://community.tealiumiq.com/t5/iQ-Tag-Management/Tag-Configuration-Advanced-Settings/ta-p/13600#....
This is, however, a good idea and it would be worth emailing it to email@example.com.