Why raise requisition as specified (2,5)
I believe the answer is:
to order
'as specified' is the definition.
(I've seen this before)
'why raise requisition' is the wordplay.
'why' becomes 'ot' (I can't explain this - if you can you should believe this answer much more).
'raise' is a reversal indicator.
'requisition' becomes 'order' (I've seen this before).
'ot' back-to-front is 'to'.
'to'+'order'='TO ORDER'
Can you help me to learn more?
(Other definitions for to order that I've seen before include "As specified" , "In accordance with specification" , "In fulfilment of an instruction" , "as required" .)