Is it possible to define the option 'Yes' as a default option for the field optInCellNumber in the Candidate Profile?
"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."
SAP SuccessFactors Recruiting Management
In the background, this field will work as a checkbox and currently, the field will appear as "Unselected", which means 'No', by default. It's also not possible to edit the value via Business Rules in RCM.
The SMS functionality must be enabled by the candidate itself.
If you have a business scenario which requires the option to be enabled automatically, please refer your business case in the Influence Portal where our Product Management team will be analyzing your case and if successfully voted and approved, can be implemented in further product releases. Please refer to the following article for any additional information - 2090228 - How to Submit Ideas for SAP SuccessFactors Products
optInCellNumber, default, automatically, yes , KBA , LOD-SF-RCM-CAN , General Candidate Issues (not Offers, not Profiles) , How To