Oracle Message OCI-01858 - a non-numeric character was found where a numeric was expected

ERRORa non-numeric character was found where a numeric was expected
CAUSEThe input data to be converted using a date format model was incorrect. The input data did not contain a number where a number was required by the format model.
ACTIONFix the input data or the date format model to make sure the elements match in number and type. Then retry the operation.