Short answer. The indicative invoice is the draft GST invoice CAMS prepares for you, one per AMC, from the commission that AMC is paying you this month. You request it under GST Invoice Download in GST Invoice Management on camsonline.com. CAMS emails it to your registered address as a ZIP, with an Excel report whose name starts with GST_REPORT. You then sign each invoice and upload the signed set with the Excel sheet.
CAMS prepares it from the AMC's payment for that month. It shows the taxable value, the GST split and the AMC's GSTIN as CAMS holds them. It is a draft for that one payment. Your total GST position across all your income is between you and your CA, which is why CAMS uses the word indicative.
Sign in on camsonline.com under Distributors and RIA. Open Service Requests, then Distributor Mailback Services, then GST Invoice Management, then GST Invoice Download. Pick the AMCs. Pick the payment month and year. Set Output Format to Separate PDF for each AMC (ZIP). Submit. CAMS emails the ZIP and the GST_REPORT Excel to the email address registered with CAMS.
Output Format has two choices. Single PDF gives you one long file with every AMC on its own page. Separate PDF for each AMC gives you a ZIP with one file per AMC. The upload screen needs one signed PDF per AMC, so choose the ZIP.
The GST_REPORT file in the email is fully filled in: AMC, CAMS invoice number, payment month, your GSTIN, and the amount columns. The Excel Template button on the upload screen gives a file with the same headings but blank amount columns. That one is for distributors raising their own invoice figures. For the indicative invoice route, use the emailed GST_REPORT file.
Upload the ZIP and the GST_REPORT Excel from your CAMS email and see one of your own invoices signed. No signup, no card.
Try with your file, freeIt becomes your invoice once it carries your signature and has been uploaded and approved on CAMS.
Output Format was left on Single PDF. Request the download again with Separate PDF for each AMC (ZIP).
The figures come from the AMC's payment. Changing them makes the upload fail validation. If you believe a figure is wrong, raise it with CAMS before uploading.
The payment month, which is the month the commission is paid to you, not the month the brokerage was earned.
By email, at the address registered with CAMS, after you submit the request on the GST Invoice Download screen. It does not appear on the screen itself.