This is not an error message, but a message about a data entry that would otherwise have remained unobserved.
Operating system error numbers can also occur in the syslog (the 'errno'). These numbers are different for different manufacturers. To evaluate the numbers displayed in the central syslog, you must also know which operating system is in use on the different application servers.
The current solution to this is that each application server enters this information the first time the transaction SM21 is started.