The most common and most likely answer to this crossword clue is the 8 letter word MANDATES
I've seen this crossword clue in The Guardian
M
A
N
D
A
T
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S
More clues leading to the result MANDATES
Buddy explains!

The straight part
We know that "orders" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case orders = mandates.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MANDATES mean?
MANDATES noun- An official or authoritative command; an order or injunction; a commission; a judicial precept.
- The authority to do something, as granted to a politician by the electorate.
- A papal rescript.
- A period during which a government is in power.
- To authorize
- To make mandatory