The probe breaks event data down into tokens and parses them into elements. Elements are used to assign values to ObjectServer fields; the field values contain the event details in a form that the ObjectServer understands.
The elements that the probe generates depend on the source table from which the probe is retrieving data. The probe generates the element names from the columns names of that source table. Each field from each row of the source table becomes an element in the alarm. So the elements that the probe generates will differ from source table to source table.