For customers who have registered a Japan Post Bank account and have not entered the 7-digit account (index number is registered), we are unable to process the withdrawal.
Because we are unable to process the transfer, you are required to resubmit the application. We apologize for the inconvenience.

Please use the following page as an example for how to change the account number.

●Sending money between Japan Post Bank accounts and other banking institutions -Japan Post Bank
http://www.jp-bank.japanpost.jp/kojin/sokin/furikomi/kj_sk_fm_furikomi.html

●Using index number to look up store names, bank account types, and account numbers for transfer -Japan Post Bank
http://www.jp-bank.japanpost.jp/kojin/sokin/furikomi/kouza/kj_sk_fm_kz_1.html