You must record this match? (5)
I believe the answer is:
light
'this match?' is the definition.
(light can mean a flame or match)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for light that I've seen before include "Torch" , "solution to clue" , "bulb" , "weighing relatively little" , "Source of illumination" .)