After initial backup check fails

Hi. After the initial backup, the check said a pack was in several indexes. Do I need to read all the data or just rebuild the indexes as it said? How does this occur?

Thanks in advance for any suggestions

Did you interrupt and restart the backup at any point? Were multiple clients creating backups at the same time?

Note that this is not an error, just a notice. The pack being in two indexes will not cause any problems.

Thanks for your quick response.

No, I did not interrupt the backup. How could a pack wind up inmore
than one index?