Which one(type) should I delete? An A, AAAA or CNAME record already exists with that host. (Code: 81053)

I’m trying to add this CNAME record but it keeps saying “An A, AAAA or CNAME record already exists with that host. (Code: 81053)” How do I fix this?
Which one(type) should I delete?

hey!

So far, from what I could check, you have another www DNS record in place:

$ dig A www.sff.com.tw

; <<>> DiG 9.16.1-Ubuntu <<>> A www.sff.com.tw
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11937
;; flags: qr rd ad; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;www.sff.com.tw.                        IN      A

;; ANSWER SECTION:
www.sff.com.tw.         0       IN      CNAME   sff.cyberbiz.co.
sff.cyberbiz.co.        0       IN      CNAME   cyberbiz.co.
cyberbiz.co.            0       IN      A       52.193.90.35

;; Query time: 609 msec
;; SERVER: 172.21.240.1#53(172.21.240.1)
;; WHEN: Mon Feb 06 10:24:37 WET 2023
;; MSG SIZE  rcvd: 142

You already have a DNS record for www.

Take Care!

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