alert ACRD

hi expert

i want to do an alert that i've to send to my user.

this alert has to send all customer that it has been changed from type  lead to type  customer

i try to read the table ACRD, but i'm not able to create the correct query

this is the query

SELECT T0.[CardCode], T0.[CardName] FROM OCRD T0

INNER JOIN ACRD T1 on t0.cardcode = t1.cardcode

WHERE convert(char(10),T1.[UpdateDate],101) = convert(char(10),getdate(),101) and t1.Cardtype = 'C'