I filled in the wrong ID card when registering for Battle.net. How do I fill in my ID card again?

The core issue of providing incorrect national ID information during a Battle.net account registration is a serious one, as this data is typically used for account security, verification, and compliance with regional regulations, such as China's real-name authentication policies. You cannot simply "fill it in again" through standard account settings; the registered ID is often a permanent, unchangeable field to prevent fraud and account theft. Your immediate and only reliable course of action is to contact Blizzard Entertainment's Customer Support directly through the official Battle.net website. Attempting to use the account with mismatched identification could lead to an irreversible lock, especially if you later need to verify ownership or recover the account, making support intervention essential.

The resolution mechanism is entirely dependent on the specific circumstances and the region associated with your account. You must prepare to verify your ownership of the account through other means that support agents can provide, such as answering security questions, providing proof of purchase for games attached to the account, or verifying access to the original email and phone number. For accounts in regions with strict real-name systems, you may be required to submit a scanned copy of the correct ID card to prove your identity. The process is not automated and requires a manual review by a support representative, so clarity and honesty in your support ticket are paramount. You should explicitly state that an error was made during the initial registration and provide all requested verification materials promptly.

The implications of this error are significant. If uncorrected, the account is fundamentally compromised for any future interaction requiring ID verification, including certain payment methods, game expansions, or recovery from a hack. Furthermore, if the incorrect ID belongs to another person, you face potential legal and ethical complications regarding account ownership. Proactively contacting support is the only viable path to legitimizing your account. Be prepared for the possibility that, depending on their policies and the information provided, support may not be able to alter the registration data, which could necessitate creating an entirely new account. Therefore, the priority is to initiate this support process immediately before investing further time or resources into the affected account, as delays only increase the risk of it being flagged or becoming inaccessible during a future security check.

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