validation in goods issue is not proper working ? give me suggestion

Validation in goods issue - Warehouse according to Branch Code----                                  

--IF @transaction_type IN ('A', 'U') AND @Object_type = '60' 

--BEGIN

-- Declare @DocEn1 as int

-- Declare @line1 as int

-- Declare @BranchCode1 as varchar(max)

-- Declare @J as int

-- Declare @Wh1 as varchar(max)

-- set @J =0

-- set @BranchCode1=(select U_BranchCode from OIGE where DocEntry= @list_of_cols_val_tab_del)

-- set @DocEn1=(select DocEntry from OIGE where DocEntry=@list_of_cols_val_tab_del)

-- set @line1=(SELECT MAX(LINEnUM) FROM IGE1 WHERE DocEntry=@DocEn1)

-- while(@J<=@line1)

-- BEGIN

-- set @Wh1=(select WhsCode from IGE1 where DocEntry=@DocEn1 and LineNum=@J)

-- set @J=@J+1

-- if(@BranchCode1='DIV2' or @BranchCode1='UNIT -2' )

-- BEGIN

-- if(@Wh1 not like'%U2')

-- BEGIN

-- SELECT @Error = 1,

-- @error_message = 'Please selet warehouse according to BrachCode.'

-- END

-- END

-- if(@BranchCode1='DIV1' or @BranchCode1='UNIT - 1')

-- BEGIN

-- if(@Wh1 like'%U2')

-- BEGIN

-- SELECT @Error = 1,

-- @error_message = 'Please selet warehouse according to BrachCode.'

-- END

-- END

-- END

--END