{"record":{"id":"9c69056d7f477f62","repo":"hashicorp/nomad","slug":"cron-start-must-contain-d-fields","errorCode":null,"errorMessage":"cron.start must contain %d fields","messagePattern":"cron\\.start must contain (.+?) fields","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"nomad/structs/task_sched.go","lineNumber":77,"sourceCode":"//\n// Enterprise only.\ntype TaskSchedule struct {\n\tCron *TaskScheduleCron\n}\n\nfunc (t *TaskSchedule) Validate() error {\n\tif t.Cron == nil {\n\t\treturn errors.New(\"must specify cron block\")\n\t}\n\n\tconst (\n\t\tstartFields     = 6\n\t\tendFields       = 2\n\t\trestrictedChars = \"/,\"\n\t)\n\n\tif strings.Count(t.Cron.Start, \" \") != (startFields - 1) {\n\t\treturn fmt.Errorf(\"cron.start must contain %d fields\", startFields)\n\t}\n\tif strings.Count(t.Cron.End, \" \") != (endFields - 1) {\n\t\treturn fmt.Errorf(\"cron.end must contain %d fields\", endFields)\n\t}\n\tif strings.ContainsAny(t.Cron.Start, restrictedChars) {\n\t\treturn fmt.Errorf(\"cron.start must not contain %q\", restrictedChars)\n\t}\n\tif strings.ContainsAny(t.Cron.End, restrictedChars) {\n\t\treturn fmt.Errorf(\"cron.end must not contain %q\", restrictedChars)\n\t}\n\n\treturn nil\n}\n\nfunc (t *TaskSchedule) Next(from time.Time) (start, end time.Duration, err error) {\n\treturn t.Cron.Next(from)\n}\n","sourceCodeStart":59,"sourceCodeEnd":95,"githubUrl":"https://github.com/hashicorp/nomad/blob/482b49bf1aec006f089bcfc7e632d8f6ac303e5e/nomad/structs/task_sched.go#L59-L95","documentation":"TaskSchedule (enterprise) validation error: cron.start does not have exactly 6 space-separated fields (sec min hour dom month dow), as measured by counting spaces. Extra or missing fields make the expression unparseable.","triggerScenarios":"Thrown at nomad/structs/task_sched.go:77 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Write cron.start with exactly 6 fields, e.g. \"0 0 9 * * Mon-Fri\"","Check for doubled or missing spaces between fields"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"482b49bf1aec006f089bcfc7e632d8f6ac303e5e","analyzedAt":"2026-09-04T07:54:14.808Z","contentChangedAt":"2026-09-04T07:54:14.808Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}