Structure I have to keep records (7)
I believe the answer is:
archive
'keep records' is the definition.
(keep records in an archive)
'structure i have' is the wordplay.
'structure' becomes 'arch' (arch is a kind of structure).
'i have' becomes 'ive' (contraction of 'I have').
'arch'+'ive'='ARCHIVE'
'to' acts as a link.
(Other definitions for archive that I've seen before include "Collection of historic or institutional documents" , "Collection of records or papers of an organisation" , "Repository of historical records" , "Store for historic records" , "Records or historical papers of an institution" .)