Define two types of services which used in communication in SAP?

1.	Define two types of services which used in communication in SAP?
Answer» Define two types of services which used in COMMUNICATION in SAP? Below are the two types of services used to deal with communication (1)Gateway Service (2)Message Service (1)Gateway ServiceWe use this service to do communication between R/# and the EXTERNAL applications by USING the CPI-C PROTOCOL. (2)Message ServiceHere use command to exchange short internal messages and these service is used by the application servers.

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