Step 1:  Always fill the “Chanda form” first to generate a reference number for your donation, then use it in the bank reference field and leave a bank message field blank.
Step 2:  Pay the exact total amount specified in the form using the reference number generated during form submission.
Step 3:  Click “I have made a payment” to submit the form after payment transfer completed and download your chanda detail form copy, in case you need it.