Cannot save underscore custom fields in one wordpress installation using xmlrpc and underscores
You have to unprotect meta to be able to access it with XML-RPC: <?php function my_unprotect_meta( $protected, $meta_key, $meta_type ) { if( ‘_al_listing_price’ == $meta_key ) { return false; } } add_filter( ‘is_protected_meta’, ‘my_unprotect_meta’, 10, 3 ); The solution you’ve mentioned in the comment to the question is ‘duct tape’ though it works. It completely … Read more