your code can be simplified as
IF @Req_Event = 'PLC_SP_1200_A'
BEGIN
set @Option_Nbr = 11
Select @Expected_Scan = Value
From ISS_cfg_Item_Option
Where Item_Nbr = @Job_Dtl_Item_Nbr
AND Option_Nbr = @Option_Nbr
Select @Req_Value = CASE @Expected_Scan
WHEN 'BZM' THEN '1'
WHEN 'BZL' THEN '2'
WHEN 'CKL' THEN '3'
ELSE '0'
END
goto done
END
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SQL Server MVP
http://visakhm.blogspot.com/