I have an AGOL Hosted Feature Service that's been around for a long time. Several maps and apps have been built on the feature service.
{"addResults":[],"updateResults":[{"objectId":51099,"uniqueId":51099,"globalId":null,"success":false,"error":{"code":1000,"description":"Invalid column name 'HearingDate'."}}],"deleteResults":[]}
Here is a typical update request against the feature service. Note that the phrase 'HearingDate' is not part of the request.
[{"attributes":{"OBJECTID":51099,"CaseNumber":"6705943754","DateReceived":1532735978738,"Complainant":"test 105","ComplainantPhone":null,"ComplainantEmail":null,"Address":"Test Address","City":"Test city","IncidentDescription":"testing","SiteStatusDate":1532735978738,"DispositionDate":1532735978738,"DispositionNotes":null,"TagNumber":null,"TagIssuedDate":null,"IgaPartner":null,"Icomp":null,"PostingDate":null,"Latitude":null,"Longitude":null,"CitationNumber":null,"RespondentName":null,"IssuedDate":null,"ResponseDate":null,"Costs":null,"TotalCitationAmount":null,"JudgementDate":null,"HearingsOfficerJudgement":null,"CitationComments":null,"AsbestosSampleDate":null,"AsbestosSampleCount":null,"CaseAgeInDays":621,"DataApprovedDate":null,"SiteStatus":"Dirty","CleanupTime":null,"HasEvidence":"No","Disposition":"Open","CaseType":"Report","WasteSource":null,"DumpLocation":null,"EnvironmentalSensitivity":null,"DumpSize":null,"IsFreeBox":null,"CampersPresent":null,"PersonalProperty":null,"IsActive":"Yes","SuspectAsbestos":"No","ReportedMethod":"Website","County":"testing","AssignedCrew":null,"InvestigatingOfficer":null,"CitationResponse":null,"AsbestosSampleResults":null,"DataApproved":null,"SiteNotes":null,"IsTheftOfService":"No","LocationDetails":null,"ReferredToAgency":null,"ReportID":"RPT0Test","ReportStatus":"Received","ReportStatusDate":1532735978738,"ReportStatusNotes":null,"ReportedCount":1,"ReporterHasEvidence":"No","ReporterFirstContactedDate":null,"ReporterContactNotes":null,"reporterEvidenceDetails":"","EditDate_1":1534591020000}}]