WS_DELIVERY_UPDATE_2 is not upating line text

I am trying to update Header and line item text using the FM WS_DELIVERY_UPDATE_2 with in the IDOC_INPUT_DELVRY. I have populated all the required prameters for line text in FM but it is not gettnig updated in delivery. Header text are getting updated without any issues. Could someone please help on this issue.

IT_TEXTH-RFBEL = '800003709'

IT_TEXTH-RFPOS = '000010'

IT_TEXTH-TDOBJECT = 'VBBP'

IT_TEXTH-TDNAME = '800003709000010'

IT_TEXTH-TDID = 'Z057'

IT_TEXTH-TDSPEAS = 'EN'

APPEND IT_TEXTH

IT_TEXTL-RFBEL = '800003709'

IT_TEXTL-RFPOS = '000010'

IT_TEXTL-TDID = 'Z057'

IT_TEXTL-TDSPRAS = 'EN'

IT_TEXTL-TDLINE = 'TEST TEXT'

APPEN IT_TEXTL

PASSING THIS INTO FM WS_DELIVERY_UPDATE_2 in table Parameters. The line item text is not getting updated.

Thanks

Senthil