Set down, log (6)
I believe the answer is:
record
I believe this is a double definition.
'set down' is the first definition.
(I've seen this before)
'log' is the second definition.
(I know that log is a kind of record)
(Other definitions for record that I've seen before include "a hole in one?" , "Facts known about a person - may be criminal" , "release" , "A minute" , "Written report - best so far!" .)