Procedure or function has too many arguments specified - just two parameters

[programmher]

I have a button that calls a delete stored procedure with only two parameters. I can run the stored procedure via SQL manager and know it works. But, when I call the stored procedure from a sqldatasource on the .aspx page I get this error: Procedure or function has too many arguments specified.

Here is my code:

<asp:SqlDataSource runat="server" ID="sqlAuthorsInfo" ConnectionString="<%$ ConnectionStrings:Authors %>" ProviderName="<%$ ConnectionStrings:Authors.ProviderName %>" 
    SelectCommand="FindAuthors" SelectCommandType="StoredProcedure" DeleteCommandType="StoredProcedure" DeleteCommand="Remove_Authors">
    <SelectParameters>
        <asp:QueryStringParameter Name="authorcode" Type="Int32" QueryStringField="id" />
    </SelectParameters>
     <DeleteParameters>
        <asp:QueryStringParameter Name="authorcode" Type="Int32" QueryStringField="id" />
        <asp:ProfileParameter Name="AuthorID" Type="Int32" PropertyName="UserID" />  
               </DeleteParameters>
</asp:SqlDataSource>



     <asp:GridView runat="server" ID="gvAuthors" DataSourceID="sqlAuthorsInfo AutoGenerateColumns="false"  DataKeyNames="AuthorName" >
    <Columns>
        <asp:TemplateField ItemStyle-CssClass="basicItem">
            <ItemTemplate>
                    <asp:ImageButton ID="Delete"  runat="server" CommandName="Delete" /delete.png" />
            </ItemTemplate>
        </asp:TemplateField>
        
        <asp:BoundField DataField="AuthorName" HeaderText="Author Name" DataFormatString="{0:g}"   />
           
    </Columns>
</asp:GridView>

Here is how the stored procedure looks - it is very simple:

DECLARE @authorcode int, @authorid int

DELETE FROM Requests
WHERE authorcode = @authorcode
AND authorid = @authorid

What is wrong? How do I resolve this???

[Rabbit]

What is the full stored procedure code?

I see two variables and zero parameters in the body of the stored procedure. The header of the stored procedure definition will list the parameters.