Unsynced SVN revisions have been found in this mirror. Rebuild this mirror from the first affected revision to sync all SVN revisions

Hi Team,

we are facing below error , these commits are very old commits and reporting the issue now , can you help ASAP

Error :
Unsynced SVN revisions have been found in this mirror.
Rebuild this mirror from the first affected revision to sync all SVN revisions.

please find the support zip in below link