Can't port number - "this MSISDN already exists"

[HongyuZ3116]

When I try to move my number, the website remind me that:"This msisdn already exists.", what should I do to keep my old number?

[dalyer]

This sometimes happens if the number was with 48 in the past. 

• https://community.48.ie/t5/forums/searchpage/tab/message?advanced=false&allow_punctuation=false&q=Ms...

You'll have to contact 48 support about this and in order to get your number ported.

See the links in my signature below.

[HongyuZ3116]

Thank you a million! It's very helpful