We are trying to implement an sms link in a text component but it keeps getting cleaned out of the HTML. Please can someone advise how we can fix this? Example below:
The links are getting removed because of Antisamy policy(protection against Cross site scripting attcks).
To fix this for 'sms' you need to do exact chages like mentioned in below threads for 'tel'
xss - 'tel' attribute not working in href of anchor tag in rich text editor in classic UI in AEM 6.1...
Experiencing Adobe Experience Manager - Day CQ: AEM 6 SP2 - Handling Custom Protocol in Link Href in...
Please check below as well:
Linkchecker removing href value