I started running the taxonomy sync and it starts, but the site timed me out before it could complete. I also noticed you have a very large amount of taxonomies/variations, and this could be part of the issue. Regarding the issue with syncing a large number of variations or taxonomies, it's likely that your server is hitting a limit on how many input variables it can handle at once — specifically the max_input_vars setting in PHP.
Please try the following:
1. Increase max_input_vars
This setting limits how many input fields PHP can process at once. The default is usually 1000, but for your setup, it should be a lot higher. Try 10000 or even higher.
You can increase it using one of the following methods (depending on your hosting environment):
php.ini
ini
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max_input_vars = 5000
.htaccess
apache
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php_value max_input_vars 5000
wp-config.php
(Only works if your server allows it)
php
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@ini_set('max_input_vars', '5000');
Hosting Panel / Support
If you're unsure how to do this, your hosting provider can make the change for you.
You can confirm it’s working with a plugin like WP Server Info or by checking the output of phpinfo().
2. Other Important PHP Settings
Please also check and adjust these values:
Setting Recommended Value
max_execution_time 300
memory_limit 256M or higher
post_max_size 64M or higher
upload_max_filesize 64M or higher
These can affect large sync operations, especially with WooCommerce + WPML.
3. Use WPML Troubleshooting Tools
Go to WPML → Support → Troubleshooting and try these:
Clear the WPML cache
Fix terms count
Once you have increased max input vars, please let me know if you are able to run the sync in Taxonomy Translations.
