Appropriate document to be landed with? (5,4)

I believe the answer is:

title deed

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'appropriate document' is the definition.
'title deed' can be an answer for 'document' (title deed is a kind of document). I'm not certain of the 'appropriate' bit.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for title deed that I've seen before include "Having proof of ownership" , "Deleted it (anag.)" , "Document establishing legal right to property" , "Document giving legal right of ownership" , "Document proving ownership" .)

I've seen this clue in The Times and The Sun.

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