87 votesArthur Barton commented
In Europe in order to be able to collect Membership Fees by direct debit it is necessary to record the IBAN Bank number of members. (There are other safety conditions that need to met but they need not concern us here.)
The IBAN number has a specific format , for example:
DE11 7016 9619 0000 0699 99
Because it such a long alpha/numeric input, spacing the input into groups of 4 characters will help to avoid mistakes and subsequent confusion.
It would be useful to have a field which has this input format as a pull down option for Bank Account Details.
Arthur Barton, MELTA Germany