{% for part in product.categories.sortByPosition().first.breadcrumb|slice(1) %}{{ part }}/{% endfor %}{{ product.productNumber }}/{% if product.customFields.custom_product_brand is defined %}{{ product.translated.customFields.custom_product_brand|replace({' ': '-'}) }}{% endif %}-{{ product.translated.name}}
try this… das definded hats bei mir gelöst