iso 8583 Unpacking error field 123 arrayindexout of bound

Question

I am using JPOS to pack and unpack ISO message the packing of the message is just good and when I get the following reply

1210E030000002000020000000000400002807110457626000026000000052220140909134530000001812UU2411906554003TCB48520141026|20141026|D|UG|142465.75|Interest Paid||20991780.75^20140930|20140930|D|UG|164383.55|Interest Paid||20849315^20140831|20140831|D|UG|169863.00|Interest Paid||20684931.45^20140731|20140731|D|UG|169863.00|Interest Paid||20515068.45^20140630|20140630|D|UG|164383.55|Interest Paid||20345205.45^20140531|20140531|D|UG|169863.00|Interest Paid||20180821.9^20140430|20140430|D|UG|10958.90|Interest Paid||20010958.9^20140429|20140429|D|UG|20000000.00|Deposit Created||20000000.00

When I try to unpack it I get the following error:

error unpacking field 123
org.jpos.iso.ISOException: org.jpos.iso.IFA_LLLCHAR: Problem unpacking field 123 (java.lang.ArrayIndexOutOfBoundsException: 592)
    at org.jpos.iso.ISOStringFieldPackager.unpack(ISOStringFieldPackager.java:178)
org.jpos.iso.ISOException: org.jpos.iso.IFA_LLLCHAR: Problem unpacking field 123 (java.lang.ArrayIndexOutOfBoundsException: 592)
    at org.jpos.iso.ISOBasePackager.unpack(ISOBasePackager.java:233)

i am not soo good in JPOS, but i will try to help, what packager are you using? — Yazan, Nov 05 '14 at 09:17
is it `ISO93APackager`, you are using ISO 8583-2:1993 version? — Yazan, Nov 05 '14 at 09:23
I am using ISO 8583:1987 packager. This is what I got from the iso87ascii.xml. — jabsy, Nov 05 '14 at 11:23
i used that packager, but, the error was `unpacking field=102` however, if i delete the first char from left, i start getting success unpack, and keep deleting , all is success but with different dump msg, so try it, and if you can post the original message here too, i will post an answer to make it clear. — Yazan, Nov 05 '14 at 13:52
I got the solution here https://github.com/jpos/jPOS/blob/master/jpos/src/dist/cfg/packager/test-generic-validating-packager.xml. It was a packager issue. Thanks — jabsy, Nov 06 '14 at 06:39

score 0 · Answer 1 · answered Nov 05 '14 at 13:58

this is the code i used

ISOMsg msg = new ISOMsg();

try {
    msg.setPackager(new GenericPackager("iso87ascii.xml"));
    msg.unpack(str.getBytes("UTF8"));

    msg.dump(System.out, "");
} catch (ISOException e) {
    e.printStackTrace();
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
}

if you start removing first chars, you will start getting results, as following:

str="210E030000002000020000000000400002807110457626000026000000052220140909134530000001812UU2411906554003TCB48520141026|20141026|D|UG|142465.75|Interest Paid||20991780.75^20140930|20140930|D|UG|164383.55|Interest Paid||20849315^20140831|20140831|D|UG|169863.00|Interest Paid||20684931.45^20140731|20140731|D|UG|169863.00|Interest Paid||20515068.45^20140630|20140630|D|UG|164383.55|Interest Paid||20345205.45^20140531|20140531|D|UG|169863.00|Interest Paid||20180821.9^20140430|20140430|D|UG|10958.90|Interest Paid||20010958.9^20140429|20140429|D|UG|20000000.00|Deposit Created||20000000.00";

Output:

<isomsg>
  <!-- org.jpos.iso.packager.GenericPackager[iso87ascii.xml] -->
  <field id="0" value="210E"/>
  <field id="7" value="0000000040"/>
  <field id="8" value="00028071"/>
  <field id="35" value="4576260000"/>
  <field id="55" value="00000052220140909134530000001812UU2411906554003TCB48520141026|20141026|D|UG|142465.75|Interest Paid||20991780.75^20140930|20140930|D|UG|164383.55|Interest Paid||20849315^20140831|20140831|D|UG|169863.00|Interest Paid||20684931.45^20140731|20140731|D|UG|169863."/>
</isomsg>

if you remove the '2' from begin of str:

<isomsg>
  <!-- org.jpos.iso.packager.GenericPackager[iso87ascii.xml] -->
  <field id="0" value="10E0"/>
  <field id="3" value="000000"/>
  <field id="4" value="040000280711"/>
  <field id="31" value="045762600"/>
  <field id="51" value="002"/>
</isomsg>

and so on...

if you remove the whole 1210E, you will get

<isomsg>
  <!-- org.jpos.iso.packager.GenericPackager[iso87ascii.xml] -->
  <field id="0" value="0300"/>
  <field id="19" value="000"/>
  <field id="39" value="04"/>
</isomsg>

which i find logic, as it have iso39 (response)

i am not sure if this is for a help, but it could give you a clue,

Yazan thanks. but the string starts with 1210-MTI this the reply that comes from the server socket so using it as it is is better. — jabsy, Nov 06 '14 at 05:34

score 0 · Answer 2 · answered Nov 06 '14 at 06:42

I got the solution here https://github.com/jpos/jPOS/blob/master/jpos/src/dist/cfg/packager/test-generic-validating-packager.xml it was a packager issue. I have used the packager and it works correctly. If the packager on the server side is different from the client side, then an error is likely to occur.

iso 8583 Unpacking error field 123 arrayindexout of bound

2 Answers2