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Integrating Smaller Business Partners with the
PCK 
The following documentation describes how you can use the Partner Connectivity Kit (PCK) to connect smaller business partners, who do not have SAP Exchange Infrastructure, to the Integration Server.
You use the PCK to connect a business system environment of a smaller business partner to the Integration Server of a system landscape integrated by means of XI. The PCK enables messages to be exchanged with the business system landscape of the smaller business partner.
The PCK of the smaller business partner receives a message from its system landscape and converts the format of the message to XI message protocol. The message is forwarded to the Integration Server for further processing.
To forward XML messages from the Integration Server to a receiver business system in the system landscape of the smaller business partner, the PCK of the business partner receives the message, converts it into the format required by the receiver system, and then forwards the message. The PCK contains the following adapters:
· RFC Adapter
· File Adapter
· JMS Adapter
· JDBC Adapter
· SOAP Adapter
· SAP Business Connector Adapter
· Mail Adapter
· XI Adapter

An SAP business system needs to send a message to a smaller business partner.
· The message is sent in XI message protocol from the Integration Server to the PCK.
· The PCK uses the file adapter to convert the XI message format to the format of the connected business system of the smaller business partner.
· The PCK sends the file to the business system.
