Only passing some parameters to TSQL stored procedure getting coldfusion error

TSQL
 
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
 
 
 
 
ALTER PROCEDURE [dbo].[usp_InsertOrUpdateDocumentsLibrary] 
@AbstractKey uniqueidentifier = NULL,
@CreateDate datetime = NULL,
@ModifyDate datetime = NULL,
@Creator varchar(100) = NULL,
@Title varchar(200) = NULL,
@Keywords varchar(200) = NULL,
@xapMMDocumentID uniqueidentifier = NULL,
@format varchar(100) = NULL,
@ContentMain varchar(MAX) = NULL,
@FilePath varchar(200) = NULL,
@FileName varchar(100) = NULL,
@FileLocationURL varchar(200) = NULL,
@DateAdded datetime = NULL,
@Size int,
@Processed bit 
AS
If Exists (Select * From tblDocumentsLibrary WHERE Abstract_Key = @AbstractKey
or (FilePath = @FilePath and FileName=@FileName))
  UPDATE tblDocumentsLibrary
 
SET Abstract_Key = @AbstractKey,CreateDate = @CreateDate,ModifyDate = @ModifyDate,Creator = @Creator,Title = @Title,Keywords = @Keywords,xapMMDocumentID = @xapMMDocumentID,format = @format,ContentMain = @ContentMain,FilePath = @FilePath,FileName = @FileName,FileLocationURL = @FileLocationURL,DateAdded = @DateAdded,Size = @Size,Processed = @Processed 
WHERE Abstract_Key = @AbstractKey
 
ELSE  
  INSERT INTO dbo.tblDocumentsLibrary 
  ( Abstract_Key,CreateDate,ModifyDate,Creator,Title,Keywords,xapMMDocumentID,format,ContentMain,FilePath,FileName,FileLocationURL,DateAdded,Size,Processed
  )
  VALUES ( @AbstractKey,@CreateDate,@ModifyDate,@Creator,@Title,@Keywords,@xapMMDocumentID,@format,@ContentMain,@FilePath,@FileName,@FileLocationURL,@DateAdded,@Size,@Processed 
  )
 
 
 
 
coldfusion calling:
 
<cfloop query="abstractfiles">
<cfstoredproc procedure="usp_InsertOrUpdateDocumentsLibrary" datasource="svc" debug="yes">
	<cfprocparam type="in" dbvarname="@AbstractKey" value="" null="yes" cfsqltype="cf_sql_varchar">
    <cfprocparam type="in" dbvarname="@FilePath" value="#abstractfiles.directory#" cfsqltype="cf_sql_varchar">
	<cfprocparam type="in" dbvarname="@FileName"  value="#abstractfiles.name#" cfsqltype="cf_sql_varchar">
	<cfprocparam type="in" dbvarname="@Size" value="#abstractfiles.Size#" cfsqltype="cf_sql_numeric">
</cfstoredproc>
</cfloop>