SAP Message AD285 - Check table & does not exist or has no key fields DOCUMENTATION NOTES DiagnosisThe specified check table either does not exist or is only a structure.Check tables, however, must be database tables, i.e. it must bepossible to create such tables on the database if necesssary.ProcedureCorrect the check table entry. 534596Fields of structure BAPISDH1 have invalid check tables1224011Error AD 285 or DT 304 in ACT phase of upgrade or in EHPI