OccurrenceAttachment

Applies an attachment to the sum of a group of records that share equal values for their Trial, Time, and OccurrenceKey fields. Once the attachment is applied, the result is proportionally allocated to all records in the group.

Structure

{
    "_schema": "OccurrenceAttachment_1.0",
    "attachment": 1000,
    "currency": "GBP"
}

Parameters

Parameter Name	Required	Type	Description
attachment	Yes	double	The attachment value in currency units. Cannot be negative.
currency	No	string	The currency in which attachment is defined.

Behaviour

This is equivalent to the ScopedAttachment with span_columns set to [Time, OccurrenceKey] and erode_columns set to [Time, OccurrenceKey]. In other words, it applies a non-eroding attachment to occurrences generated by combining records with matching Time and OccurrenceKey values.