Hi Suvankar,
You are getting HTTP 404 that means client it is not able communicate with ERP system then either link is broken or "Print preview "service is not running on ERP side.
In case if you configured your URL in HCI using parameter.prop file then make sure it should look like similar to this :
ERP_Service_URL=https\://xyz.abc.corp\:1234/sap/bc/srt/rfc/sap/salesdocumentprintpreviewquery/<client>/service/binding
Also , Make sure in ERP via SOAMANAGER web service configuration above service is running .
Regards
Sharad
