Hi,
it is not a standard transaction. It is a solution from 3rd party vendor built on top of ECC. So I would try to check documentation from them to figure out meaning of this table. You might be lucky and somebody who is using this solution might be able to answer your question. Regarding your second question. I guess both of those professions should be able to add a config entry into a table. Is it's customizing table have you tried to check SCUL log to figure out who populated this table in one system?
Cheers