The following documents are needed:
Form A2 along with a declaration form: As per FEMA, Form A2 is required every time the money is sent abroad to declare the amount that is to be transferred. Your bank will file this for you within the LRS filings. Stockal automatically fills this for you - all you need to do is, make sure that the information is correct, then download the filled-in form, sign and upload it back for your bank to file.
Bank KYC documents: PAN card and your address proof.