India makes ship-to GSTIN mandatory in e-invoice and e-way bill APIs from August 2026
India's GSTN issued an API advisory on 17 June 2026 making ship-to GSTIN mandatory in e-invoice and e-way bill transactions from 1 August 2026. The change affects IRN generation, e-way bill creation, and validation rules for bill-to/ship-to flows.
India’s Goods and Services Tax Network (GSTN) has mandated the capture of ship-to GSTIN in e-invoice and e-way bill APIs, effective in production from 1 August 2026. The 17 June 2026 advisory operationalises a 20 May 2026 announcement and specifies technical changes across five transaction flows, including new validation rules and a voluntary e-way bill closure facility.
API changes take effect 1 August 2026
GSTN issued an advisory on 17 June 2026 operationalising the mandatory capture of ship-to GSTIN in bill-to/ship-to transactions. The changes went live in the sandbox environment the same day; they become effective in production on 1 August 2026. The advisory follows representations from trade bodies, ERP vendors, GSPs, ASPs and private IRPs seeking clarity on how the requirement applies when an e-way bill is generated alongside an IRN.
Changes to IRN and e-way bill generation
The advisory affects five transaction flows:
- Generate IRN and e-way bill together
- Generate e-way bill using IRN
- Bill-to/ship-to transactions
- Combination transactions
- Voluntary closure of e-way bill
In the Generate IRN schema, ShipDtls.Gstin becomes conditionally mandatory whenever ship-to legal name and address are supplied and an e-way bill must be generated. For unregistered consignees, the value URP is used.
The e-way bill by IRN API introduces a new mandatory Gstin field under ExpShipDtls. An optional TrdNm (Trade Name) field is also added.
Validation rules
The ship-to GSTIN must be a valid GSTIN and different from the bill-to GSTIN. This structural requirement assumes the two parties are distinct persons in bill-to/ship-to flows.
The advisory also clarifies the voluntary closure of e-way bill facility post-delivery, harmonising portal and API behaviour.
What vendors and taxpayers must do
Taxpayers and system integrators using IRN-based e-way bill generation must update their systems to comply with the new mandatory fields and validation rules. Sandbox testing has been available since 17 June 2026; the rules apply in production from 1 August 2026.
Correction, July 30, 2026: an earlier version of this article said the changes were effective immediately from June 2026. The GSTN advisory released them in sandbox in June; production enforcement starts 1 August 2026.