--- title: "MONDIAL RELAY: ERROR WHEN GENERATING A RETURN LABEL: INVALID COLLECTION METHOD" description: "MONDIAL RELAY: ERROR WHEN GENERATING A RETURN LABEL: INVALID COLLECTION METHOD" --- [Passer au contenu](https://knowledge.shippingbo.com/mondial-relay-error-when-generating-a-return-label-invalid-collection-method#main-content) Français Afficher le sous-menu pour les traductions [![bleu et blanc\_Sigle+logo SBO\_300dpi (2)](https://knowledge.shippingbo.com/hs-fs/hubfs/bleu%20et%20blanc_Sigle+logo%20SBO_300dpi%20(2).png?width=160&height=30&name=bleu%20et%20blanc_Sigle+logo%20SBO_300dpi%20(2).png)](https://knowledge.shippingbo.com/?hsLang=fr) Ouvrir la navigation principale Fermer la navigation principale - Français Afficher le sous-menu pour les traductions Bonjour. Comment pouvons-nous vous aider ? - Il n'y a aucune suggestion car le champ de recherche est vide. 1. [Knowledge base](https://knowledge.shippingbo.com/?hsLang=fr) 2. [Erreurs fréquentes & comment les éviter](https://knowledge.shippingbo.com/erreurs-fr%C3%A9quentes-comment-les-%C3%A9viter?hsLang=fr) 3. [FAQs - Erreur à la génération des étiquettes](https://knowledge.shippingbo.com/erreurs-fr%C3%A9quentes-comment-les-%C3%A9viter?hsLang=fr#faqs-erreur-%C3%A0-la-g%C3%A9n%C3%A9ration-des-%C3%A9tiquettes) 30 octobre 2026 # MONDIAL RELAY: ERROR WHEN GENERATING A RETURN LABEL: INVALID COLLECTION METHOD You are trying to generate a return label with the carrier Mondial Relay, but you receive the following error:  ***28-Invalid collection method***   This error is due to the fact that an option required to create returns with Mondial Relay is not enabled in your Mondial Relay account.    **Solution:** You need to contact Mondial Relay support so that they can enable the required option in your account.     #### Contact us 📬: Questions about this feature? Feel free to write to us [here](https://support.shippingbo.com/?hsLang=fr) so that we can answer your questions. [![Chill listening crop-3](https://knowledge.shippingbo.com/hs-fs/hubfs/Logo%20shippinggbo.png?width=104&height=24&name=Logo%20shippinggbo.png "Chill listening crop-3")](http://shippingbo.com) Copyright © 2026, Shippingbo