[Closed] i'm creating a translatable product and need help attach custom taxonomies

Hello Vincent,

Thanks for your question. To attach custom taxonomies to both original and translated products, you’ll want to:

Assign the taxonomy term to the original product using wp_set_object_terms().

Use WPML’s wpml_object_id filter to retrieve the translated term ID for each language.

Assign the translated term to the translated product using the same function.

Example:

$translated_term_id = apply_filters( 'wpml_object_id', $original_term_id, 'your_custom_taxonomy', false, $target_lang );
wp_set_object_terms( $translated_product_id, array( $translated_term_id ), 'your_custom_taxonomy' );

The hook:
https://wpml.org/wpml-hook/wpml_object_id/

Also, make sure your custom taxonomy is marked as “Translatable” in WPML settings and translated at WPML > Taxonomy Translation.

Best regards
Andreas