As per SEBI regulations, funds can be added only from the ban linked to your ArihantPlus account. 

If you’ve transferred money from an unregistered or third-party bank account, it won’t be credited to your trading account. In such cases, please share the transaction details and a copy of your bank statement with our customer support team, and we’ll help initiate the refund to your source account at the earliest. We understand this can happen by mistake, and our team is always happy to assist you in resolving it smoothly. 

Did you know you can link multiple bank accounts registered under your name to your ArihantPlus account? So, if you want to transfer funds through your other bank accounts not linked to your trading account yet, you can easily do through your app by going to the Bank Details page under My Account.