# Binding Invite Code An invited user may be automatically bound to the inviter through an invite link, or may manually enter an invite code during registration or at a designated entry point. Each user can usually be bound to only one inviter, subject to platform rules and page display. If a user does not register through an invite link and does not enter a valid invite code at the designated entry point, the referral relationship may not be established. To avoid duplicate binding, incorrect attribution, or abuse, a referral relationship, once established, usually cannot be frequently changed. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.market.cards/referral/binding-invite-code.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.