-25350: Conversion from UNICODE data to ASCII data is not supported. This conversion may cause information loss 

Explanation:

You have executed a command to import (IMPORT), update (UPDATE), or export (EXPORT) data. The command was terminated because you have tried to import data with UCS2 or UTF8 encoding to a database that has the parameter _UNICODE=NO set, or you have tried to export data as ASCII files from a database that has the parameter _UNICODE=YES set.

User Response:

If the error occurred while importing or updating data, make sure that the database parameter _UNICODE=YES is set. Then re-import the data. If the error occurred in the export, set the file attribute UCS2 in the export command, and re-execute the command.