The most common and most likely answer to this crossword clue is the 6 letter word COUPON
I've seen this crossword clue in Financial Times
C
O
U
P
O
N
More clues leading to the result COUPON
- Voucher scam taking in publisher
- Firm well-informed about voucher
- Become aware of union cutting voucher
- Officer knowledgeable about voucher
- Slip up in supplement to bill on opening night
- Company happy about entry form
- Clever stratagem operating to get ticket
- Successful manoeuvre over ticket
- Redemption is a possibility with this takeover happening
- Publishers engaged in fraud making slip
Buddy explains!

The straight part
We know that "voucher" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case voucher = coupon.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 COUPON mean?
COUPON noun- A section of a ticket, showing the holder to be entitled to some specified accommodation or service, as to a passage over a designated line of travel, a particular seat in a theater, a discount, etc.
- A voucher issued by a manufacturer or retailer which offers a discount on a particular product.
- A certificate of interest due, printed at the bottom of transferable bonds (state, railroad, etc.), given for a term of years, designed to be cut off and presented for payment when the interest is due; an interest warrant.
- Any interest payment made or due on a bond, debenture or similar (no longer by a physical coupon).
- The letter sent to parliamentary candidates at the 1918 general election, endorsing them as official representatives of the coalition government.
- A person's face.
- To use coupons to a such extent that makes the user actively looking for coupons in magazines, online and whatever they can be found.