ERROR #5911: Character Set 'iso-8859-4' not installed, unable to perform character set translation (EnsLib.HL7.Operation.HTTPOperation)

Question

Question

Will · Mar 16

#Business Operation #HL7 #InterSystems IRIS for Health

Hi,

My HL7 interface in production is outputting messages to a HL7 File Operation and a EnsLib.HL7.Operation.HTTPOperation. There is no errors in the File Operation, but the HL7 HTTPOperation is giving ERROR #5911: Character Set 'iso-8859-4' not installed, unable to perform character set translation. Both the HL7 File Operation and HL7 HTTP Operation are using latin1 for Default Char Encoding.

What is ERROR #5911 about? Is something missing in the IRIS installation?

Thank you.

W

Product version: IRIS 2024.1

$ZV: IRIS for UNIX (Red Hat Enterprise Linux 8 for x86-64) 2024.1.1

Discussion (6)2

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score 1 · Answer 1 · 2025-03-17T08:57:04-04:00

Looks like HealthConnect/IRIS for Health doesn't supply ISO-8859-4 ("Northern European"), or its successor ISO-8859-10. You can try forcing other character sets by preceding them with an exclamation point in the operation's Default Char Encoding property, but there may be characters that translate incorrectly:

score 1 · Answer 2 · 2025-03-17T10:11:43-04:00

Hi Jeffrey,

I tried !iso-8859-1, !latin1 and !utf-8 for Default Char Encoding property but in all cases I still got the same error.

Btw, the original message has 8859/1 in MSH-18. I also tried removing the value in MSH-18 but it still got the same error.

W

score 0 · Answer 3 · 2025-03-17T11:48:42-04:00

Jeffrey Drumm · Mar 17

Seems like the operation isn't working as it should; you may want to take this up with the WRC.

0 0

score 0 · Answer 4 · 2025-03-17T12:59:06-04:00

To resolve the ERROR #5911: Character Set 'iso-8859-4' not installed, start by checking the MSH-18 field in your HL7 messages, as it may specify iso-8859-4 even if your interface is configured for latin1. Next, adjust the HTTP Operation settings to explicitly enforce latin1 as the character set for consistent encoding.

score 0 · Answer 5 · 2025-03-17T17:15:50-04:00

Harshitha

MSH-18 specifies 8859/1. I also tried making MSH-18 blank, same error. Also tried explicitly setting Char Set encoding (please see my reply to Jeffrey Drumm)

W

score 0 · Answer 6 · 2025-03-23T09:18:38-04:00

The error #5911: Character Set 'iso-8859-4' not installed, unable to perform character set translation indicates that the character set 'iso-8859-4' is not available in your IRIS installation. This can occur even if your interface is configured to use 'latin1' for Default Char Encoding. To resolve this issue, you should check the MSH-18 field in your HL7 messages, as it may specify 'iso-8859-4' even if your interface is configured for 'latin1'. You can try adjusting the HTTP Operation settings to explicitly enforce 'latin1' as the character set for consistent encoding [1].