The most common and most likely answer to this crossword clue is the 7 letter word COINAGE
I've seen this crossword clue in Financial Times
C
O
I
N
A
G
E
More clues leading to the result COINAGE
- Neologism created by commander at late stage of life
- Making up like Bob and Penny were
- Pen round old popular invention
- I hack into company base? That’s a fabrication
- A newly invented word, eg acoge?
- Devising a new word for brass or tin
- Pen inspiring love with popular invention
- Moneymaking invention
- Perhaps all change county during later years
- Potential for change of company involved with generation
Buddy explains!

The straight part
We know that "That’s a fabrication" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case that’s a fabrication = coinage.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 COINAGE mean?
COINAGE noun- The process of coining money.
- Coins taken collectively; currency.
- The creation of new words, neologizing.
- Something which has been made or invented, especially a coined word; a neologism.
- The process of creating something new.