"An object with name 'xxxx' and type 'report Definition' already exist in the destination folder"
This issue only occurs in 3-tier connection, and not in 2-tier connection.
CAUSE:The issue occurs because there are similar reports starting with the same name in the folder.
ACTION:This is a known issue in Strategy 9.x.
WORKAROUND:Either rename the reports with similar names to shorter names/exclude special characters or move reports to separate folders.