Converting a interger to a string and then using as a join in a sp.

Question

I have a stored procedure where i am trying to join an order table to a customer table by cust #
in the order table the customer is an interger
in the customer table the customer is a string
i am using the following stored proc.
when i run the report it get a CONVERSION FAILED WHEN CONVERTING A VARCHAR TO INT.
how can i convert it then use it to join to?  do i have to declare it first?
alter PROCEDURE [dbo].[CR_CREDIT_LIMIT_REVIEW]
AS
SELECT    
BPW5_2_Staging.dbo.OORDHDRA.DIVNA          AS COMPANY,
BPW5_2_Staging.dbo.OORDHDRA.ORODAT          AS ORDER_DATE,
BPW5_2_Staging.dbo.OORDHDRA.ORRTYP          AS ORDER_TYPE,
BPW5_2_Staging.dbo.OORDHDRA.ORNUMA          AS ORDER_NUMB,
BPW5_2_Staging.dbo.OORDDETL.ORSEQD          AS LINE_#,
(BPW5_2_Staging.dbo.OORDDETL.ORSIZ1     +BPW5_2_Staging.dbo.OORDDETL.ORSIZ2     BPW5_2_Staging.dbo.OORDDETL.ORSIZ3BPW5_2_Staging.dbo.OORDDETL.ORSIZ4
BPW5_2_Staging.dbo.OORDDETL.ORSIZ5BPW5_2_Staging.dbo.OORDDETL.ORSIZ6BPW5_2_Staging.dbo.OORDDETL.ORSIZ7BPW5_2_Staging.dbo.OORDDETL.ORSIZ8
+BPW5_2_Staging.dbo.OORDDETL.ORSIZ9)     AS UNITS,
BPW5_2_Staging.dbo.OORDDETL.orprce          AS COST,
BPW5_2_Staging.dbo.OORDDETL.ORACTD          AS ORACT,
BPW5_2_Staging.dbo.OORDDETL.ORSHPD          AS START_DATE,
dbo.OCUSMA.OKCUNO,
dbo.OCUSMA.OKCUNM,
dbo.OCUSMA.OKCRLM,
dbo.OCUSMA.OKTDIN
FROM        
dbo.OORDHDRA INNER JOIN
dbo.OORDDETL ON dbo.OORDHDRA.ORNUMA = dbo.OORDDETL.ORNUMD
AND dbo.OORDHDRA.CONOA = dbo.OORDDETL.CONOD AND
dbo.OORDHDRA.DIVNA = dbo.OORDDETL.DIVND
INNER JOIN
dbo.OCUSMA ON dbo.OORDDETL.ORACTD = dbo.OCUSMA.OKCUNO
WHERE     BPW5_2_Staging.dbo.OORDDETL.ORSTAT not in('S','C','R')
ORDER BY BPW5_2_Staging.dbo.OORDDETL.ORACTD

Answer 1

figured it out
in the join statement i used this cast statement
CAST(dbo.OORDDETL.ORACTD As VARCHAR(12))  = dbo.OCUSMA.OKCUNO