Diagnosis
Communication from another system (R/3 System or other system) usingSecure Network Communications (SNC) was encountered. The SNC name (namefor the external security system) of the R/3 partner system is not inthe table SNCSYSACL for the target system or not permitted for thecorresponding communication mode (RFC/CPIC/DIAG).

System Response
The target system terminates the connection.

Procedure
The table SNCSYSACL is an Access Control List (ACL) containing a listof valid partner systems for SNC protected communication.
If communication was terminated by a valid system, add an entry to thetable SNCSYSACL or activate the relevant communication mode.