Duplicate Lease Detection by Contract Reference
Lease102 warns you when a new lease looks like a duplicate of one you already hold, so the same contract is not counted twice.
When you create a lease
If another active lease already uses the same contract reference, a non-blocking warning appears after you save. The lease is still created. Review it and delete the duplicate if it was entered by mistake.
When you import from a document
On the import review screen, any draft whose contract reference matches an existing active lease shows a Possible duplicate banner before you approve it, so you can skip or correct it.
Non-blocking by design
The check warns, it never blocks. Legitimate leases that happen to share a reference can still be saved. A lease that ended and was replaced by a fresh agreement for the same asset is best created with Copy on the old lease, which carries the arrangement over and links the two records. An option written into the lease that is exercised, or a new term agreed while the lease was still running, is recorded on the existing lease as a modification rather than as a second record.