update [RegistryCopy].[dbo].[RegFile_New]
SET r.[FileNo] = v.[Cont#Account (New ACC)]
where r.[FileNo] IN
(
SELECT r.[FileNo]
FROM [RegistryCopy].[dbo].[RegFile_New] as R
INNER JOIN
[Registry_Malta_Recovered].[dbo].OLD_NEW_AccountsFromSap as v ON
r.FileNo] = v.[Acct in legacy (Old ACC)]
where
r.[FileNo] = ('1000040000')
)
I'm getting the error message:
The multi-part identifier "r.FileNo" could not be bound.