congestion on 4g now waiting with 5g new phone for activation

Yes, an SM DP +Address is given by mobile providers who *support eSIMs*, an embedded SIM chip within the circuit board of your mobile phone. 

As I have already told you, Smarty does not support eSIMs. At the current time, Smarty only offers Physical SIM cards, the small plastic cards which encase some metal contacts, which you insert into a SIM tray within your phone. 

As you are asking about eSIMs you cannot be a Smarty customer. 

The only networks in the UK they currently support eSIMS are EE, O2, Vodafone, LycaMobile and Spusu. 

You normally receive an eSIM through a QR Code from your mobile provider, which you scan using your phone’s camera, and the eSIM is then automatically installed in your phone. You don’t even need to know the SM DP +Address, unless for some reason, you have to manually install the eSIM yourself, rather than by using the QR code.

I suggest you contact the company from whom you acquired the eSIM, as it certainly isn’t Smarty, as they don’t offer eSIMs.