This advisory is issued by the GST Network (GSTN) to ensure that businesses can maintain uninterrupted operations when using the e-Invoice and e-Waybill systems, especially during potential service disruptions. 

Key Takeaways: 

Multiple Invoice Registration Portals (IRPs): 

• • • There are six IRPs available for e-Invoice generation (e.g., NIC-IRP 1, NIC-IRP 2, Cygnet IRP, etc.). 

     1. NIC-IRP 1: https://www.einvoice1.gst.gov.in 

     2. NIC-IRP 2: https://www.einvoice2.gst.gov.in 

     3. Cygnet IRP: https://einvoice3.gst.gov.in 

     4. Clear IRP: https://einvoice4.gst.gov.in 

     5. EY IRP: https://einvoice5.gst.gov.in 

     6. IRIS IRP: https://einvoice6.gst.gov.in 

• • • If one IRP is unavailable, businesses can switch to another to continue generating e-Invoices. 

Dual e-Waybill Portals: 

• • • Two e-Waybill portals are available (eWaybill1 and eWaybill2). 

     1. eWaybill1 (https://ewaybillgst.gov.in) 

     2. eWaybill2(https://ewaybill2.gst.gov.in) 

• • These portals ensure redundancy so businesses can continue generating e-Waybills even if one portal is down. 

Unified Authentication Token: 

• • • A single authentication token, generated on NIC portals, can be used across all NIC e-Invoice and e-Waybill portals. 

• • • This eliminates the need to create separate tokens for different platforms. 

API Interoperability: 

• • • APIs allow taxpayers to switch between NIC-IRP portals seamlessly.  For instance: 

A taxpayer can access NIC1 services via NIC2 APIs or vice versa. 

i. Accessing NIC1 e-Invoice Services via NIC2 APIs: By passing “NIC1” value in “irp” API header for APIs at https://api.einvoice2.gst.gov.in 

ii. Accessing NIC2 e-Invoice Services via NIC1 APIs: By passing “NIC2” value in “irp” API header for APIs at https://api.einvoice1.gst.gov.in 

• • Supported functions include generating, cancelling, and fetching e-Invoice and e-Waybill details. 

Recommended Actions for Taxpayers: 

• • • Direct API Access: Businesses should ensure their systems are set up for cross-portal operations. 

• • • Coordination with Service Providers: Work with solution providers (like ERP or GSP providers) to integrate these backup mechanisms. 

• • • Use Alternate IRPs: Explore the use of other IRPs beyond NIC-IRP for added redundancy. 

Why is This Important? 

This advisory ensures that businesses can continue filing GST-compliant documents (like e-Invoices and e-Waybills) even during technical issues or system downtimes. It reduces the risk of disruptions in supply chains or business operations and helps maintain compliance.