Unable to convert character data for download -- substituting '?'

There is no upload data script defined for table: %1!s!. Synchronization has the risk of potentially losing upload data

Unable to convert character data for download -- using NULL

MobiLink Synchronization Reference
MobiLink Synchronization Server Warning Messages
MobiLink synchronization server warning descriptions

Unable to convert character data for download -- substituting '?'

Item	Value
Warning code	10029
Level	5

Probable cause

Character data originating from the consolidated database needs to be translated before being sent to the client. This was not possible for all characters. A '?' will be substituted for each problem character.