Conversion Failed when converting varchar value to Int

Hi All,

I have this below query

SELECT  Distinct card_transaction_log.Location,COUNT(card_id),SUM(Amount)
  FROM [cwvaluecard].[dbo].[card_transaction_log]
  left outer join jjledw1.edw.location.tedw_d_location_type_2 
  ON  CAST(card_transaction_log.Location AS INT) =  tedw_d_location_type_2.location_num
  where card_transaction_log.Location  = '3020'
  group by card_transaction_log.Location 
 


which runs fine,and we can see its bringing only for location 3020,however if i want to bring for all the locations, i use this



SELECT  Distinct card_transaction_log.Location,COUNT(card_id),SUM(Amount)
  FROM [cwvaluecard].[dbo].[card_transaction_log]
  left outer join jjledw1.edw.location.tedw_d_location_type_2 
  ON  CAST(card_transaction_log.Location AS INT) =  tedw_d_location_type_2.location_num
  group by card_transaction_log.Location 


I receive the following error,

Conversion failed when converting the varchar value  to data type int.


Can someone please help me with any suggestions?

Also, i am going by linked server which can be seen and location in one table is varchar and on the linked server it is INT which is the reason i am casting while joining.


Again any help will be appreciated.

Thanks