You got the error message when finalizing a binder, and the binder is finalized in LFR, but it's not in CFR.
1) Create a copy of the binder in LFR
2) Synch the binder back to the CFR, then check out the binder
3) Make sure you are satisfied with the new binder
4) Delete the old binder from LFR
5) Rename the new binder back
6) Finalize the binder again
7) Delete the old binder from CFR