JMS <--> PI <--> IDOC Party Communication

Hi,

I have a scenario JMS --> PI --> IDOC and vice-versa. JMS is an external system, so using PARTY communication. SAP System is within customer landspace.

My doubt is - I have to import a Business System in ID for the IDOC (SAP system). Now where should I import this Business System? Should I import the SAP Business System under Party or under Without Party?

If I am not wrong Business Component for JMS will come under the Party; have a doubt about the Business System.

Thank you,

Pankaj.