The function mapping definition for user_attribution includes an IN TABLE clause that substitutes ConversionEvents for conversion.
If the correlation variable conversion is specified during function processing, ConversionEvents is substituted.
CREATE FUNCTION MAPPING user_attribution
FOR Attribution SERVER coprocessor
USING
inputtable IN TABLE,
ANY IN TABLE,
ConversionEvents(conversion) IN TABLE,
excluding IN TABLE,
optional IN TABLE,
model1 IN TABLE,
model2 IN TABLE,
EVENT_COLUMN_NAME ('event'),
TIMESTAMP_COLUMN_NAME ('time_stamp' ),
WINDOW(WindowSize);