An IPO bid reaches the exchange only after your bank confirms the UPI mandate that blocks the application amount in your account. If that block doesn't go through, the application is rejected. The most common reason by far is that the UPI mandate wasn't approved before the cut-off—and in most cases you can simply re-apply while the IPO is still open.
Here are the usual reasons, starting with the one we see most often, and what to do about each.
What are the common reasons an IPO application is rejected?
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The UPI mandate wasn't approved in time. You didn't approve the mandate in your UPI app before the day's cut-off, declined it, entered the wrong UPI PIN too many times, or the request timed out. → What to do: Re-apply while the IPO is open and approve the mandate request in your UPI app promptly—the app shows the approval deadline.
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The UPI ID was invalid or unsupported. A mistyped UPI ID, a handle your bank has deactivated, or a bank or UPI app that isn't enabled for IPO mandates. Not every bank and UPI app supports IPO applications through UPI-ASBA—only the banks and third-party UPI apps on NPCI's live-partner list do. → What to do: Re-apply using a UPI ID from a bank or UPI app that supports IPO (UPI-ASBA) mandates, and check the ID for typos.
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Insufficient funds in the linked bank account. The full application amount must be free to be blocked in the bank behind your UPI ID when the mandate is processed. → What to do: Keep the full amount available in that account and re-apply.
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A technical issue at your bank or on the UPI network. Your bank's systems or NPCI were temporarily unavailable, or the bank rejected the block for a technical reason. → What to do: Wait a short while and re-apply before the IPO closes; if it keeps failing, try a UPI ID from another bank.
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The transaction wasn't permitted on your account. Some bank accounts aren't enabled for UPI mandate transactions. → What to do: Ask your bank to enable UPI mandate/IPO transactions on the account, then re-apply.
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Your demat account wasn't active. If the demat account is suspended or its details don't match, the application is rejected. → What to do: Make sure your demat account is active—raise a ticket with Rupeezy Support if it shows suspended—then re-apply.
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The payment wasn't from your own account, or it didn't match your demat account. IPO applications can't be funded from someone else's account—third-party payments aren't allowed. The bank account behind your UPI ID must be your own and must be a bank account linked to your demat account. For joint accounts, the first holder of the bank account must be the same as the first holder of the demat account. → What to do: Apply with a UPI ID tied to your own bank account that's linked to your demat account, with the first holder matching.
Things to keep in mind
- Approve the mandate before the cut-off, every time—it's the single best way to avoid a rejected application. See How do I apply for an IPO? for the full flow, including the UPI mandate and the subscription-based trigger.
- One PAN, one application per category. Multiple applications on the same PAN in the same category can be rejected by the registrar.
- A rejected application means no money was taken—the amount is only blocked when the mandate succeeds. For what happens to a block that did go through, see When will I get my money back after an IPO?; to track an application, see How do I check my IPO application status?.