Is there a way to change the default template for all posts in wordpress?

Question

I am creating posts in wordpress programmatically using php. Is there a way to change the post attributes template either programmatically or using the admin panel for all posts? I would like the default to be Product details as you see in the picture below.

Any help appreciated. Thanks.

Answer 1

after creating post programmatically assign page template.

update_post_meta( $post_id, '_wp_page_template', 'page-template.php' );