Moving data from SQL Server 2008 to Teradata 13.10 safely

I need to move data from SQL Server 2008 to Teradata 13.10. But before I do that I need some information on how to ascertain the correctness of the moved data. Is there anyone willing to provide me with a data type comparison list? Do you know of any tips to follow and traps to evade when carrying out the data move. Please assist me so I can avoid mistakes when moving the data.
