No i believe brokerage having a separate section to calculate , so m sure its not brokerage
You just wrote contract note, instead you should specify which broker or post a sample.
Otherwise, from the contract notes that i get, taxable value of supply is Brokerage, and someone like Zerodha puts brokerage in brackets next to it.
check what is next to it in Brackets like Fyers specifies Sebitoc or Toc NSE
these are various chgs like sebi chgs, exch trx chgs etc
Usually such charges attract GST additionally unlike stamp duty, STT,CTT etc