Hello Koen
The core product does not have the ability to decode/encode messages with ISO8583, however we do have a tactical assertion (Product extension) that might help. Although I have not used the 'Extensible Socket Connector' from the documentation it would appear to allow the ISO8583 encoding /decoding. Can you raise a support case and we can let you have the documentation to review if the assertion will work for your needs.
Regards
Christopher Clark
CA Support