Copy the contents of entity to new one in same CR

Hello MDG Guru's,

I have a requirement where I have custom entity in data model 0G with several attributes, I need to copy all the attributes data based on a value YES in one of the attribute.

The main primary SU type 1 attribute  is char10 field and if I found YES in one of the custom attribute of this entity then exact replica of all the contents should be created with prefix A for main primary attribute char10. This should be saved in the same CR with another record created.

Please suggest and advise on how to proceed with this, helpful response will be highly rewarded.

Thanks,

Naveen