# Contact Information AsyncAPI specs **MUST** include at least one main contact under the info.contact section. The spec only allows to include one contact there, but it **MAY** also include additional contacts using extension fields. In case this is done, it **MUST** use the extension field _x-additional-responsibles_. For example: ```yaml ... info: ... contact: name: "Main point of contact" email: "team_dl@adidas.com" x-additional-responsibles: - person2@adidas.com - person3@adidas.com - person4@adidas.com ```