Recorded the wrong date out of pig-headedness! (5)
I believe the answer is:
taped
'recorded' is the definition.
(taping is a kind of recording)
'the wrong date out of pig-headedness' is the wordplay.
'the wrong' is an anagram indicator.
'out of' means one lot of letters goes inside another.
'headedness' indicates taking the first letters.
The first letter of 'pig' is 'p'.
'date' with letters rearranged gives 'taed'.
'taed' enclosing 'p' is 'TAPED'.
(Other definitions for taped that I've seen before include "Bound" , "recorded" , "On record; tied up" , "put on record" .)