Unable To Generate Payext IDOC With Msg Code IHC and Msg Function FI

Hi Experts,

I am trying to generate a payext IDOC with message code IHC and message function FI for In house cash component but unable to do so.

Getting an error as 'IDoc type could not be determined for the IDoc' which is a common error.

Am I missing some setting for generating this type of IDOC. I have defined house bank, partner number, defined outbound parameters as above in the the partner, IDOC type as PEXR2002 and defined a port as well.

When I remove the message code IHC and function FI, IDOC gets generated successfully, but as per my understanding it is required to specify this code and function to generate idoc for the purpose of forwarding it to IHC.

Please advise.

Thanks.