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 (5)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 1 · 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.

1 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