How to sort goods by collections in 1C Bitrix (by substring from the article)?

Question

1C-Bitrix

Hello!
Can you please tell me how to sort products by collections (groups of products)?
For example, we have a ring with the article KL-03/32154
and earrings with the article SG-03/32154 in our basket (they are linked to each other in the product properties on the website)
. didn't work for me:
$arFilter = array(
"CATALOG_BUNDLE" => "DESC"
);
Maybe try sorting by the last 8 characters of the article?
What would $arFilter look like in this case?

Answer 1

CATALOG_BUNDLE - what is it anyway?
Sort (not filter) by properties as far as I remember like this:

$arOrder = [ "PROPERTY_[id или code свойства]" => "ASC", ];