DataSource Controls :: StoredProc - Msg 156 - Incorrect Syntax Near Keyword "DECLARE"

I am getting these errors when compiling => Msg 156, Level 15, State 1, Line 2 Incorrect syntax near the keyword 'AS' Msg 156, Level 15, State 1, Line 6 Incorrect syntax near the keyword 'DECLARE'.

SET ANSI_NULLS
ON
SET QUOTED_IDENTIFIER
ON
GO
AS
ALTER PROCEDURE [dbo].[Z_DQA_LOAD_RECIPE]
DECLARE @instbl
varchar(50)
SET @instbl
=
'Z_DQA_'
DECLARE @instbl_def
varchar(50)
SET @instbl_def
=
'Z_DQA_'
DECLARE @updttbl
varchar(20)
DECLARE @Run
int
DECLARE @Defect
int
DECLARE @Test_Num
int
DECLARE @Test_Desc
varchar(50).............................