SQL SERVER INVALID TYPE

I have a message error

"Invalid int argument data type for substring function argument 1."

I don’t understand why !

UPDATE DBO.NUMBER
SET NUMBER = 22675442455
WHERE SUBSTRING(ID,1,2) NOT IN ('67','68')

Thanks for your help !

>Solution :

SUBSTRING required first argument as STRING, so simply convert it to VARCHAR.

UPDATE DBO.NUMBER
SET NUMBER = 22675442455
WHERE SUBSTRING(CONVERT(VARCHAR(15),ID)),1,2) NOT IN ('67','68')