--- title: "TNT: \"VALID IS 12 CHARACTERS\" ERROR" description: "TNT: \"VALID IS 12 CHARACTERS\" ERROR" --- [Passer au contenu](https://knowledge.shippingbo.com/base-de-connaissance/https/knowledge.shippingbo.com/tnt-valid-is-12-characters-error#main-content) Français Afficher le sous-menu pour les traductions [Centre d'aide Shippingbo](https://support.shippingbo.com/tickets?hsLang=fr) ![bleu et gris\_Sigle+logo SBO (4)](https://knowledge.shippingbo.com/hs-fs/hubfs/Photo%20Marie/bleu%20et%20gris_Sigle+logo%20SBO%20(4).png?width=210&height=40&name=bleu%20et%20gris_Sigle+logo%20SBO%20(4).png) Ouvrir la navigation principale Fermer la navigation principale - Français Afficher le sous-menu pour les traductions - [Centre d'aide Shippingbo](https://support.shippingbo.com/tickets) Comment pouvons-nous vous aider ? - Il n'y a aucune suggestion car le champ de recherche est vide. 1. [ZONE DE TEST](https://knowledge.shippingbo.com/base-de-connaissance?hsLang=fr) 2. [Erreurs fréquentes & comment les éviter](https://knowledge.shippingbo.com/base-de-connaissance/erreurs-fr%C3%A9quentes-comment-les-%C3%A9viter?hsLang=fr) 3. [FAQs - Erreur à la génération des étiquettes](https://knowledge.shippingbo.com/base-de-connaissance/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 # TNT: "VALID IS 12 CHARACTERS" ERROR You are trying to generate a label with the carrier TNT but receive the following error:  *"API response: The field 'receiver.contactFirstName' has an invalid size. Valid is 12 characters."*   This error is sent to us by TNT's services, as their systems do not allow more than 12 characters per field.    ✅**Solution:** you need to edit the value here so that it is shorter than 12 characters.    #### 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. [![bleu et gris\_Sigle+logo SBO (2)](https://knowledge.shippingbo.com/hs-fs/hubfs/bleu%20et%20gris_Sigle+logo%20SBO%20(2).png?width=210&height=40&name=bleu%20et%20gris_Sigle+logo%20SBO%20(2).png "bleu et gris_Sigle+logo SBO (2)")](http://shippingbo.com)