Creating Bank Details

what is this code error about? (see bottom right) doesnt seem to accept anything I have tried.

Hello,

The code is invalid because it does not respect the following regular expression:
pattern="^[A-Z]{4}[A-Z]{2}[0-9A-Z]{2}([0-9A-Z]{3})?$"

The BIC is an 8 character code, defined as ‘business party identifier’, consisting of the business party prefix (4 alphanumeric), the country code as defined in ISO 3166-1 (2 alphabetic), and the business party suffix (2 alphanumeric).

Best Regards,
PakMax