GSTR-1 from the Myntra sales register

Three reports for one month, overlapping, with filenames that say nothing. fynxIQ tells them apart by their columns, counts each item once, and refuses to invent the two things Myntra does not send. Read from eight real months, October 2025 to May 2026, and matched to the portal’s TCS statement in each of them.

The guide: Filing GSTR-1 as a Myntra seller

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Which report, and from where

Open Partner Portal, then Financial Reports, then Monthly Reports, tab OTHERS.

GSTR report: PackedCSVpart-00012-tid-505065954956777760-....c000, a CSV whose name says nothing about what is in it.Used for: Every order dispatched in the month.Without it: Nothing. Myntra is missing from the return entirely.

GSTR report: RTAnother part-000NN-tid-... file, from the same screen.Used for: The customer returns, as credit notes against the sales.Without it: Every return is filed as though the customer kept the goods.

GSTR report: RTOA third part-000NN-tid-... file.Used for: Orders that came back undelivered, as an invoice and its reversal.Without it: The month is overstated by everything that never reached a customer.

InvoicesZIP · PDFinvoice_prod_....zip, holding PDFs with COMMISSION and LOGISTICS in the name.Used for: Nothing for GSTR-1. These are bills Myntra raised to YOU. The GST on them is input credit: drop the PDFs on the Purchases page, where they are read into your books and held against your GSTR-2B.

The traps in this file

None of these raises an error. Each one makes a wrong return that balances.

Trap 01The three files overlapOn a real November, Packed held 26 rows, RT 5 and RTO 8, but only 29 items existed. Read as three separate files, most of the month is counted twice.26 + 5 + 8 rows, 29 items

What fynxIQ doesTells the three apart by their columns, not their names, and counts each item once.

Trap 02What came back this month was often packed last monthThe RT and RTO files list this month’s returns and cancellations, and an item packed on the 28th of last month came back on the 3rd of this one. Its invoice is in last month’s return; this month owes the reversal alone. Counting it as a sale and a reversal nets it to nothing and leaves last month’s sale standing for ever.

What fynxIQ doesFiles the reversal alone, as Myntra’s own GSTR-8 counts it, and says how many items and how much. On eight real months that was the entire difference to the portal, one item at a time.

Trap 03A cancellation after packing is a reversal, not nothingAn item packed as PK in December and cancelled on 3 January was invoiced in December. Leaving it out of January leaves December’s sale standing.

What fynxIQ doesFiles it in January as a credit note against that invoice, which is exactly how Myntra’s own GSTR-8 nets it. Read as one quarter, with both months’ reports at once, it is still an invoice and its reversal, the reversal dated the day of the cancellation or the refund; on a real April to June that was 384.47 a quarter would otherwise have declared twice over.

Trap 04Two items in one packet look like one row written twiceA packet can hold two of the same product at the same price, and every column but the item, order and SKU ids is the same on both rows.

What fynxIQ doesCounts both, because the item ids say they are two, and does not ask you about it.

Trap 05An RTO is two documents, not oneThe goods were dispatched and came back. Filing only the reversal pushes the month below zero.

What fynxIQ doesFiles an RTO as what it is: an invoice and its reversal.

Trap 06There is no HSN code anywhere in any of themMyntra sends an article type, such as Earrings or Bracelet, and no code. Table 12 needs a code, and which heading your product falls under is your decision and your notice.

What fynxIQ doesAsks you once for the code of each article type instead of guessing, and remembers it every month after. Until a type has a code, the return is stopped.

Trap 07There are no invoice numbers eitherTable 13 counts documents issued and Myntra does not number them in these files.

What fynxIQ doesUses the packet id as a reference you can search in your Myntra panel, and says plainly that the document summary is incomplete.

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