Msg 137, Level 15, State 2, Line 29 Must declare the scalar variable "@ACTIVE_STATUS".

USE [NC_DB]
GO
/****** Object:  StoredProcedure [dbo].[S_EDIT_USER]    Script Date: 12/23/2013 12:32:44 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[S_EDIT_USER]  
(  @DSA_CODE VARCHAR(10)  
    ,@REQUESTOR_DEPT VARCHAR(40) 
    ,@ACTIVE_STATUS INT  
    ,@MAKER_ID VARCHAR(10)  
    ,@MAKER_IP VARCHAR(20)  
    ,@ERROR_CODE INT OUTPUT  
)  
AS  
BEGIN  
  
DECLARE @CNT INT;   
DECLARE @SQL NVARCHAR(MAX);

--DECLARE @REQUESTOR_DEPT VARCHAR(40);
--print(@REQUESTOR_DEPT);
SELECT @CNT = COUNT(*) FROM TMAS_UAM_USER_TMP WHERE DSA_CODE = @DSA_CODE;  
  
IF @CNT > 0  
 SET @ERROR_CODE = 1;  
ELSE  
 SET @ERROR_CODE = 0; 
  
if @REQUESTOR_DEPT = 'N'
 SET @REQUESTOR_DEPT = ''; 
ELSE  
 SET @REQUESTOR_DEPT = @REQUESTOR_DEPT ; 
 print @REQUESTOR_DEPT;
  
IF @ERROR_CODE = 0

set @SQL = 'INSERT INTO TMAS_UAM_USER_TMP (  
   DSA_CODE  
           ,DSA_NAME  
           ,DSA_CITY  
           ,DSA_PRODUCT  
           ,DSA_PHNO  
           ,DSA_MOBNO  
           ,DSA_RQSTR  
           ,DSA_RQSTR_DEPT  
           ,GROUP_ID  
           ,ACTIVE_STATUS  
           ,REQ_TYPE  
           ,LAST_LOGED_IN  
           ,CREATED_ID  
     ,CREATED_IP  
     ,CREATED_DATE  
           ,MAKER_ID  
           ,MAKER_IP  
           ,MAKER_DATE  
 ) SELECT DSA_COD  
     ,DSA_NAM  
     ,DSA_CTY  
     ,PRODUCT  
     ,DSA_PHO  
     ,DSA_MOB  
     ,REQUESTOR  
     ,'+@REQUESTOR_DEPT+'
     ,GROUP_ID  
     ,@ACTIVE_STATUS 
     ,1  
     ,LAST_LOG_DAT  
     ,CREATED_ID  
     ,CREATED_IP  
     ,CREATED_DATE  
     ,'+@MAKER_ID+'  
     ,'+@MAKER_IP+'  
     ,GETDATE()  
    FROM DSA_MST WHERE DSA_COD = '+@DSA_CODE+' and ';
    
if @REQUESTOR_DEPT = 'N'
begin
set @SQL = @SQL + 'REQUESTOR_DEPT is null';
print('If Query'+@SQL);
end
else
begin
    set @SQL = @SQL + 'REQUESTOR_DEPT = ''' + @REQUESTOR_DEPT + '''';
    print('Else Query'+@SQL);
    end
    
   --EXEC sp_executesql @SQL, N'@REQUESTOR_DEPT varchar(100) output', @REQUESTOR_DEPT output
--EXECUTE sp_executesql @SQL;
execute (@SQL);
RETURN @ERROR_CODE;  
END