The ssg logs are showing the following JDBC Exception on the CA API Gateway:
com.l7tech.server.policy.assertion.ServerAuditDetailAssertion: -4: Policy Fragment: LogSink
com.l7tech.server.message: Message processed successfully
org.hibernate.util.JDBCExceptionReporter: SQL Error: 0, SQLState: S1000
org.hibernate.util.JDBCExceptionReporter: Packet for query is too large (58888888 > 33554432). You can change this value on the server by setting the max_allowed_packet' variable.
The 'Packet for query is too large' message would indicate that the size of the payload is responsible for the situation.
There is a maximum packet size of 32MB allowed in audit details.
This can be rectified globally by adjusting the setting in the following file:
/etc/my.cnf - change max_allowed_packet to a value larger than 32MB.
In order to activate the change on the Gateway, it is required to stop ssg, restart mysql and thereafter start ssg.