noun
error indication; error display
Computing term for a visual or textual signal that an error has occurred, such as a message, icon, or status indicator.
システムに誤り表示が出たので、管理者に連絡した。
An error indication appeared on the system, so I contacted the administrator.
Compound of 誤り (error) and 表示 (display, indication). A straightforward technical term.