Deriving DATA_ELEMENTS.EXISTS('attribute_short_code') in fast formula returning blank in GPI

Summary:

I’m able to call the Fast Formula for the extensible fields in GPI. However, when I derive the value using DATA_ELEMENTS.EXISTS('XX_attribute'), it returns a blank value. If I assign a default value instead, that value is successfully extracted in the output.

Below is the FF used for extensible flexfield

DEFAULT FOR DATA_ELEMENTS IS EMPTY_TEXT_TEXT
INPUTS ARE DATA_ELEMENTS (TEXT_TEXT)

l_computed_val = 'AbsEntryID'

IF DATA_ELEMENTS.EXISTS('AbsEntryID') THEN

(

l_computed_val = DATA_ELEMENTS['AbsEntryID']

)

RETURN l_computed_val

Below is the extracted GPI output. It is extracting the default value, but it is not deriving the data element for