The National Informatics Centre (NIC) has issued latest update dated 09.08.2023, stating that now sub-users can access e-Invoices generated by the main user and perform View/Cancel/Generate EWB. The main user can select Update Sub-user option as shown in the below screen. 

Select the sub-user from the list. A new option ‘Access to the IRNs of the Main User’ is provided. In case, the main user wants to give access to IRNs generated by him to the sub-user then he can select ‘Yes’ to this option. Note that along with this, one or all options such as Cancel, View report and e-Waybill generation need to be provided. For example, if Enable Access to IRNs of main user is selected as ‘Yes’ and Enable e-Invoice Cancellation is selected as Yes then sub-user can cancel the IRNs generated by Main user also.

The update can be accessed at https://einvoice1.gst.gov.in/Documents/Access%20to%20IRNs%20of%20the%20Main%20User.pdf