Process for generating e-invoice, same as regular sales invoice?

No the process for generating E invoice not same as the regular 
 sale invoice 
 To generate E invoice you need to follow the steps 
 Step1 you need to ensure that einvoice required option is enabled 
 and configured under GST VAT option which is under Configuration and Feature options
 You also need to ensure that gsp configuration is properly given and its validating 
 and in voucher series configuration of that sale type under voucher configuration option 
 generate Einvoice after saving option was enabled and also the input transport details 
 Step2 after generating of regular sale invoice while saving then the transport details 
 box will open where you need to Y einvoice generation option 
 Step3 after that you have to select the option by which you want to generate Einvoice 
 like automatic or json or csv etc 
 Step4 after selecting of format you need to check is there any error generated or not if so 
 then rectify it error may be occour due to inappropiate GSTIN of buyer or supplier 
 inappropiate address of Buyer or supplier Pincode station HSN UQC 
 Step5 after modification click on view and generate option then click to generate Einvoice