Auditing of RFC logons

What causes this issue?

RFC/CPIC logon events recorded in Security Audit Log. Depending on the
setting (see below), the following events are reported to the
monitoring architecture:
Successful RFC/CPIC logon
Failed RFC/CPIC logon
STYLE S_DOCUS1
In the Security Audit Log, the system records actions relevant for
system security. You use the configuration function of the Security
Audit Log to set which actions are recorded and which actions trigger
an alert in the alert monitor. To configure the Security Audit Log,
choose <LS>Tools -> Administration -> Monitor -> Security Audit Log ->
Configuration</> (transaction SM19)
For more information, see the "Application Help" for the Security Audit
Log.
STYLE *

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.