The check digit of the IBAN is outside of the valid range 02-98

Question

Dear Gurus,
My user has to create some master data for intermediate bank processing OR bank chain setup.
From previous colleagues' manual and some historical samples, no IBAN is needed to put.
However, when I create a new one or change the old one, IBAN is required.
T-code: FIBPU
1. Put Vendor + Company Code
2. Double click that vendor
3. highlight the selection and go to bank chain assignment
4. Choose Type(2 - intermediary bank) // Corr. Country(NL) // Corr. Bank Key // Bank Acc // IBAN
While IBAN is originally BLANK, but once i press enter, an error msg comes up:
The check digit of the IBAN is outside of the valid range 02-98
Please let me know how it can be solved. Thank you very much.
Nicholas

Answer 1

Hi Amitash,
I checked Table T005, there are only 12 countries with "bank data" checked.
I also think the customization in OY17 is not related to my problem, as my problem is not related to particular countries.
I have checked SAP note 1477691 as well, however, this sap note is to allow set IBAN as mandatory field.
What I want is to set IBAN as an optional field.
Thank you very much for your efforts!
B.R.
Nicholas