If you select “ARN/CRN not available” by mistake when the ARN/CRN is actually available, the filing may still proceed, but the portal will usually treat it as a manual case and ask you to enter details yourself instead of auto-fetching them. The practical risk is extra work, possible mismatch in details, and a higher chance of the appeal being marked defective if any required information is inconsistent.

What usually happens

  • The portal does not auto-populate the order details when “not available” is chosen, so you have to fill everything manually.
  • That means the process becomes slower and more error-prone than the ARN-available route.
  • If any mandatory field ends up wrong, the appeal can be flagged defective and may need correction within the portal’s defect window.

Best fix

  • If you have not submitted yet, go back and choose ARN/CRN available so the system can fetch the details automatically.
  • If you already submitted, check whether the filing can be edited or refiled, because defect notices are commonly used in GSTAT filings.
  • Keep a copy of the correct ARN/CRN and related order details ready before resubmitting.

Simple example

If the ARN exists but you selected “not available,” the portal may still accept the entry, but it will behave like a manual filing. That can create a defect later if the manually entered order number, dates, or party details do not match the GSTN record.

TL;DR

Wrongly selecting “ARN/CRN not available” usually does not automatically cancel the filing, but it can make the case manual, slower, and more likely to get defects if details are not entered exactly right.