Cryptically create from document sent to vendor (5,4)
I believe the answer is:
order form
'cryptically create' is the definition.
I can't tell whether this defines the answer.
'document sent to vendor' is the wordplay.
'document' becomes 'order' (order is a kind of document).
'sent to' means one lot of letters go next to another.
'vendor' becomes 'form' (I am not sure about this - if you are sure you should believe this answer much more).
'order'+'form'='ORDER-FORM'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for order form that I've seen before include "teacher as disciplinarian to do this?" , "It may be necessary for supply" .)