[Resolved] Synchronize attributes and update product variations

Problem:
The client is experiencing a PHP fatal memory exhaustion error when attempting to synchronize attributes and update product variations on a WooCommerce site with WPML active, even after increasing the server's memory to 768MB on a cloned site.
Solution:
We recommended performing standard conflict checks to isolate the cause, which involves:
1. Deactivating all non-essential plugins except for WPML Multilingual CMS, WPML String Translation, WooCommerce, and WooCommerce Multilingual & Multicurrency.
2. Switching to a default WordPress theme like Twenty Twenty-Four or Twenty Twenty-Three.
However, since these steps are not feasible on the client's production site, we advised a hands-on review by a WPML specialist. The client confirmed that the plugin "Query Monitor – The developer tools panel for WordPress" was the cause of the error; the production site is now working correctly.

If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If issues persist, please open a new support ticket at WPML support forum.