0967bf21_Lotus_Notes_Traveler_8_5_2__Steps_to_Resolve_Error
[Error Number] 1 [Error Message] The sync data received was not valid. [Notes] This is a general error that is reported back by the Sync client when it encounters and error during the processing of the SyncML package provided by the server. In most cases the sync that is in progress aborts. [Steps to Resolve Error] 
The user can perform a replace data for all PIM types that they are currently syncing.
Lotus Notes Traveler 8.5.2
Steps to Resolve Error