How to upload invoices of march 18 in april's gstr-1

This query is : Resolved

Brajesh Accounts (Querist)
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11 June 2018 Dear Sir/Mam,
We have filled our GSTR-3B and GSTR-1 for the month of March 2018 but almost 1200 invoices were left.
Now, please help us in this way that how can we upload the invoices in GSTR-1 of April 2018.
We have tried using offline utility but it shows error and if upload it online then it restrict after 500 invoices, can anyone please help us in this regard.. Thank You.

Gst HELP PANEL

Gst HELP PANEL (Expert)
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11 June 2018 DEAR FIRSTLY TELL ME WHICH EXCEL SHEET YOU R USING.
DO NOT USE ALL IN ONE EXCEL SHEET EVER. USE CSV FILE TO GENERATE JSON FILE. I THINK YOUR PROBLEM WILL BE SOLVED.