-// 'error.goto_uncompleted' => 'Go to uncompleted entry.',
-// 'error.overlap' => 'Time interval overlaps with existing records.',
-// 'error.future_date' => 'Date is in future.',
+// TODO: Suggested translation is below. But there seem to be a problem with it. It uses "post" (mail) while the error message is about uncompleted time record (an entry in Time Tracker system).
+// 'error.uncompleted_exists' => 'Ikke-afsluttet post eksisterer allerede. Luk eller slet det.',
+// 'error.goto_uncompleted' => 'Gå til uafsluttet post.',
+// TODO: consider redoing due to the same issue as with error.uncompleted_exists (is "post" correct here?).
+'error.overlap' => 'Tidsinterval overlapper eksisterende poster.',
+'error.future_date' => 'Datoen er ud i fremtiden.',