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https://issues.apache.org/jira/browse/VALIDATOR-498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18043488#comment-18043488
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Sebb commented on VALIDATOR-498:
--------------------------------
I think this is out of scope for IBAN validation.
Many countries have their own systems for bank number validation, and the rules
may not be formally documented. Indeed different banks within a country may
have different rules.
> Provide IBAN checksum proper validation for CZ accounts
> -------------------------------------------------------
>
> Key: VALIDATOR-498
> URL: https://issues.apache.org/jira/browse/VALIDATOR-498
> Project: Commons Validator
> Issue Type: Bug
> Components: Routines
> Affects Versions: 1.9.0
> Reporter: Rafal Kosmowski
> Priority: Minor
> Attachments: Screenshot 2025-01-14 at 14.41.41.png
>
>
> According to
> [https://www.cnb.cz/export/sites/cnb/en/legislation/.galleries/decrees/decree_169_2011.pdf]
> (Annex to Decree No. 169/2011 Coll.), CZ account validation should be
> extended, to verify checksums of first and second part of client account
> number (prefix and suffix). Annex contains algorithm to calculate those
> checksums
> example below:
> [https://www.cnb.cz/en/payments/iban/iban-calculator-czech-republic/]
> !Screenshot 2025-01-14 at 14.41.41.png!
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