Strictly speaking, the UK reference number route tests the other end of the wire. The exporter emails the declaration to Indian customs, which authenticates it against HMRC's exporter data and issues the number. Under EU-India, Indian customs logs into a system the European side administers. A smooth UK summer says plenty about Delhi's inbox and nothing about Europe's.
Nor is one-sided importer's knowledge new: UK-India keeps it for UK importers too, where the TCA runs it both ways.
Your third worry is gentler in the text. An importer may say the exporter has not shared, and the denial article gives no ground for refusing on that alone. Refusal without asking Europe turns mostly on the statement: unauthenticated, wrong template, wrong goods. So ask suppliers for the statement's identification number and their reference number with every invoice.
Your readings hold. CBIC's circular even supplies my footnote: authentication proves genuineness, not origin.
From the supplying side, Germany. Femi's two numbers we send; the costing behind them we will not, because that file answers to our own authority and a bad statement can cost the permission itself. That permission is applied for, not signed off. As drafted, cooperation between the two customs precedes refusal: contract for that, not for evidence.
Coming at this from one step further up the supplying side, because a fair share of what German makers sew starts as fabric from my side of the border. At a fair in Frankfurt a buyer once held up the movement certificate that came with our knit and asked whether that settled where his garments came from. It does not. That paper proves the fabric is in free circulation inside the customs union, nothing about origin, and the customs union is not a free trade agreement. Turkey is not a party to EU-India, so for the Indian claim our fabric is a non-originating input like anything from anywhere else.
So when Indian importers onboard a European supplier, I would add one question to the identification and reference numbers Femi listed: which inputs crossed in from Turkey on that certificate, and has the statement treated them as European? Claudia's people will know. A smaller workshop buying our cloth may honestly not.
