>I guess all who suggested not to use the computed column were right.
>
>After I added the computed column with the following formula:
>

>case when ([lMvNeeded] = 1) then ([iMvQuantity] + [iMvAdditional]) else [iMvAdditional] end
>

>
>all stored procedures that queries this table returns the following error message:
>
>

>Server: Msg 8101, Level 16, State 1, Procedure webforms_ipo_Section013Select, Line 63
>An explicit value for the identity column in table 'ipo_reagent' can only be specified when a column list is used and IDENTITY_INSERT is ON.
>

>
>As soon as I remove the computed column SP completes OK.
>
>Any idea why computed column is causing that behavior ?
>
>Thanks again.
>Daniel

Did you allow NULL for this column?