CODEWITHSUNDEEP
javabankingonlinebanking
simonC
simonC

Reputation: 4337

ISO 11649:2009 reference number validation in java

I'm wondering if there is a library in java that validates a string against SEPA RF reference number in payments.

I can of course implement one of my own according rules defined by ISO 11649:2009(E) standard but I would not like to reinvent the wheel. I'm not able to goole any decent library about this. Do you know of any implementation for this?

Upvotes: 1

Views: 1208

Answers (2)

Raem92
Raem92

Reputation: 11

Its more or less a simple calculation:

    final String ref = "123456789012345678901"; //21 characters max
    final String rf = "2715"; // RF converted to numbers
    String rfAdd = "01"; // assuming 01 are the check digits
    final BigInteger refint = new BigInteger(ref + rf + rfAdd);
    int mod = refint.mod(new BigInteger("97"))
                    .intValue();
    if (mod != 1) {
       mod = 99 - mod; // set mod to correct check digits
    }
    rfAdd = String.format("%02d", mod); // correct the check digits
    System.out.println("RF" + rfAdd + ref);

The result should be a valid Referencecode explained by this source
https://www.mobilefish.com/services/creditor_reference/creditor_reference.php

Upvotes: 1

Manuel M
Manuel M

Reputation: 859

There is one in an API for creating Swiss QR codes ("QR Rechnung"):

public static boolean isValidISO11649Reference​(java.lang.String reference)

Validates if the string is a valid ISO 11649 reference number.

The string is checked for valid characters, valid length and a valid check digit. White space is ignored.

Parameters: reference - ISO 11649 creditor reference to validate

Returns: true if the creditor reference is valid, false otherwise

https://www.codecrete.net/qrbill-javadoc/net/codecrete/qrbill/generator/Payments.html#isValidISO11649Reference(java.lang.String)

Upvotes: 1

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