Incorrect checksum

Dear support,
I solved the issues previously noted with my Database: I restored it from TimeMachine, backup and repaired via Tools. Now it seems to work well, but when I try to check it I have the message that 1 cecksum is incorrect, and when I try to repair, I have the message: repair failed, 1 error(s) left.
It is a problem for the future?
What to do?
Thank you very much.

Incorrect checksums are harmless since v2. But to fix this, you have to rebuild the database.