"no duplicate" can be used in written English.
It is a short declarative statement used to indicate that something should not be repeated. For example, "Please ensure that no duplicate entries are made on the form."
No duplicate charge was made to [the reader].
There is no duplicate of it among the swarming populations of the globe!
And how exactly do the young ladies ensure that there are no duplicate gowns?
Since we are taking the combination, there is no duplicate counting.
Survey responses were tracked by name and email address to ensure there were no duplicate responses.
She was xeroxing her copy (since it was in typescript no computers, and so, no duplicate or archive).
There is no duplicate or written copy of the United States instrument of ratification in the Department of State file.
The block numbering system method controls the number assignment effort so that there will be no duplicate identification numbers on documentation.
Unfortunately, there is no duplicate for the Poe Lock, and when the Soo Locks have to be shut down for repairs – as they were was last year during peak shipping season – big delays can result.
We apologize that the VIP registration process is so complex, but after a certain amount of trial and error we have found that it is best if each person has their own account, there are no duplicate accounts and if we use the masquerade system.
This signature is not his face — age can change that beyond recognition; it is not his hair, for that can fall out; it is not his height, for duplicates of that exist; it is not his form, for duplicates of that exist also, whereas this signature is each man's very own — there is no duplicate of it among the swarming populations of the globe!
