Moskva:

"Ownership" in this case refers to the fact of being the party responsible for something. It's all to do with accountability and responsability.
When we say that someone "owns" something it's literally as if they'd bought it - i.e. the are "responsible" for it. Typical management jargon.

Incident Ownership
TechTeam maintains full ownership of an incident until it is closed. To ensure that all incidents are answered in a correct manner, incident escalation procedures and product training are carefully defined. TechTeam closely monitors open incidents constantly to ensure that they are closed in a timely manner.

"Incident owners" son los "responsables del incidente" en el sentido de "responsables de su resolución".

Ref, Responsable Servicio de traducciones de una consultoría.