I make my own software to import from your contract note/trade book. Your symbol/description has the month number in them, ie expiry 16th sep 2021 is shown as 21916. This can create problems for the month of November(11th month) and December(12th month) for options. as the strike price follows after expiry date.
For eg NIFTY21 1 20 217600CE(nifty 2nd dec 2021) can be misread as nifty 20th jan 2021 expiry.
Your trade book on the screen has a column with expiry date, but the download does not have.
And your end month contract notes do not show the date, ie it just shows 21SEP and not 21SEP30.
Request you to modify your reports so we can have seamless import of your contract notes/tradebook.
Thank You