2624650 - CONFIGURATION extractors are failing with RFC COMMUNICATION FAILURE - SAP Solution Manager 7.2

The CONFIGURATION* extractors are failing with the following error:

The JCo used in this case is WEBADMIN, a test via SM59 shows the following error:

Error Details    Error when opening an RFC connection (CPIC-CALL: 'ThSAPOCMINIT', communication r
Error Details    ERROR: Transaction program not registered
Error Details    LOCATION: SAP-Server <hostname>_<SID>_$$ on host <hostname> (wp x)
Error Details    COMPONENT: CPIC
Error Details    COUNTER: 654151
Error Details    RETURN CODE: 679
Error Details    SUBRC: 0
Error Details    RELEASE: 749

When you logon the Java NWA, open the JCo Destinations and try to execute the WEBADMIN, it starts and right after that it stops again, generating the following error in the defaultTrace of the Solution Manager SCS instance:

#BC-MID-CON-JCO#rfcengine#C0000A1898472C760000015A00004448###com.sap.engine.services.rfcengine.handleThrowable(Throwable t)####1E87A4DF283E11E8C8EA0050569CDD4F#1e87a4df283e11e8c8ea0050569cdd4f##0#Thread[JCO.ServerThread-56,5,SystemThreadGroup]#Plain##
RfcException: [<host>|WEBADMIN]
    message: CPIC-CALL: SAP_CMACCPTP on convId: 00000000

LOCATION            SAP-Gateway on host <host>.<domain>.com / 3300
ERROR                 registration of tp WEBADMIN from host <host>.<domain>.com not allowed
TIME                   Tue Mar 27 15:44:56 2018
RELEASE              749
COMPONENT         SAP-Gateway
VERSION              2
RC                      720
MODULE              /bas/749_REL/src/krn/si/gw/gwxxrd.c


    Return code: RFC_SYS_EXCEPTION(3)
    error group: 102
    key: RFC_ERROR_COMMUNICATION
Exception raised by <host>|WEBADMIN

    at com.sap.mw.rfc.api.RfcApi.rfcAbort(RfcApi.java:713)
    at com.sap.mw.rfc.api.RfcApi.RfcAbort(RfcApi.java:747)
    at com.sap.mw.jco.MiddlewareJRfc.abort(MiddlewareJRfc.java:594)
    at com.sap.mw.jco.MiddlewareJRfc$Server.abort(MiddlewareJRfc.java:1877)
    at com.sap.mw.jco.JCO$Server.abort(JCO.java:8101)
    at com.sap.mw.jco.JCO$Server.listen(JCO.java:8488)
    at com.sap.mw.jco.JCO$Server.run(JCO.java:8286)
    at java.lang.Thread.run(Thread.java:763)

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

SAP Solution Manager 7.2

KBA , SV-SMG-INS-DIA , Configuration of Root Cause Analysis related infrastructure , SV-SMG-DIA-SRV-EFW , Extractor Framework , Problem