duplicationcode
nounUK /ˌdjuːplɪˈkeɪʃən kəʊd/
US /ˌduːplɪˈkeɪʃən koʊd/
A duplication code is a special set of letters or numbers that makes an extra copy of something.
The computer used a duplication code to make a second copy of the file.
OTHER MEANINGS
2. A code that identifies an item as an exact copy of another item.
Each duplicated ticket had its own duplication code printed on the back.
3. A programming instruction that tells a computer to make an identical copy of data.
The programmer wrote a duplication code to copy the list of names.
4. A secret sequence used to create a second key or access pass.
The guard used a duplication code to make a spare key for the building.