Why do you think that error is generated for the datetime field not some other field? How do you send updates, RV, SPT? You can use SQL Server profiler to see what was sent from VFP to SQ Server.

>Textbox valid:
>
>

>If Not Isnull(This.Value) And This.Value <= Date()
>   If Empty(Dtos(This.Value))
>	Update CarsMemo SET Initials = Thisform.cUser
>	This.Value = NULL
>	DoDefault()
>   Else
>	Return 0
>   Endif
>Else
>   Update CarsMemo SET Initials = Thisform.cUser
>   DoDefault()
>Endif
>

>
>When saving I get the String data, right truncation error from the server.
>
>So, why can't I set a datefield to null?
>
>TIA