Common Errors While Using Aadhaar Esignature and How to Fix Them
Facing issues with Aadhaar eSign? Learn the most common errors while using Aadhaar eSignature and get easy step-by-step solutions to fix them. From OTP problems to document format issues—this guide covers it all.

Aadhaar eSignatures are now an important tool in digital authentication of documents in India. With just a few clicks, individuals can sign documents electronically with their Aadhaar number as well as OTP authentication, which makes it easy, speedy and legal as per law. Information Technology Act, 2000.
But, as with all digital instruments, there are times when users have issues with certain mistakes when using Aadhaar eSignatures. The causes can vary from errors in authentication, to technical issues. The blog below will discuss the most frequent Aadhaar eSignature mistakes and offer step-by-step instructions to assist you in identifying and correcting them fast.
1. Invalid Aadhaar Number
Error Message "Aadhaar number is invalid"
The reason: The user has provided an inaccurate Aadhaar number or does not exist.
How to Fix:
- Check the 12-digit numbers you've entered.
- Check for any mistakes or spaces.
- Verify your Aadhaar card through UIDAI's official UIDAI website prior to trying to Sign electronically.
2. OTP Not Received
Error message: "OTP not received on registered mobile"
Cause: This can occur because of poor connectivity to the network and server issues or even if your phone number is not connected to Aadhaar.
How to Fix:
- Check that your mobile phone number is registered correctly to Aadhaar. It is possible to check and update this information through UIDAI's site.
- Take a couple of minutes then request OTP once more.
- Change to a more reliable network zone and try again.
- Try another browser, or clean your cookies and cache.
3. Mobile Numbers Not Connected to Aadhaar
Error Message "Mobile number not linked with Aadhaar"
The reason is: Aadhaar eSign relies on OTP authenticating the mobile number registered to.
- How to Fix:
- Go to the closest Aadhaar Seva Kendra to link or to update your mobile number.
- After the update, you should wait for 24 to 48 days before beginning to sign once more.
4. Signature Verification Failed
Error Message "Digital signature could not be verified"
Cause: The system may not be able validate that eSign certificate.
- How to Fix:
- Verify that your system runs the most current certificates and settings for validation.
- Open the file using a trusted PDF viewer such as Adobe Acrobat.
- Check if the digital signature is still valid within the validity timeframe.
5. eSign API Error
Error message: "Error connecting to eSign service"
The reason: This is usually an issue with the provider's or Aadhaar server's.
How to Fix:
- Take a couple of minutes then try again. At times, UIDAI servers are down at times.
- If you're connecting eSign via the API (like Surepass eSign API) be sure that the integration is correctly configured and that the API key is activated.
6. Expired or Invalid Session
Error Message: "Session expired. It is recommended to restart the session."
The reason: The session may be overdue due to lack of activity or issues with the browser.
How to Fix:
- Perform the eSignature procedure immediately after you receive the OTP.
- Be sure to not refresh your browser during making a sign.
- Log off and restart the process of signing if the session ends.
7. Browser Incompatibility
Error message: "eSign failed due to browser error"
The reason: Some browsers may prevent pop-ups from appearing or JavaScript needed to sign the electronic signature.
How to Fix:
- Utilize the most recent Versions for Google Chrome or Mozilla Firefox.
- Allow pop-ups as well as JavaScript in the browser's settings.
- Deleting browser extensions that may stop scripts.
8. Document Format Not Supported
Error error message: "Unsupported file format"
The reason: Aadhaar eSign generally uses PDF documents. When trying to sign Word, JPEG, or Excel documents could result in an error.
How to Fix:
- Convert your PDF document by using any online free converter.
- Verify that you have a password-free file. encrypted or has been damaged.
9. Aadhaar Authentication Failure
Error Message: "Authentication failed. Try again."
The reason: Your biometric or authenticating your demographics was unsuccessful.
- How to Fix:
- Verify that your Aadhaar data is current and accurate.
- If your Aadhaar is not working or if have recently updated information ensure that changes have been reflected on the system.
- Retry within a couple of minutes.
Pro Tips to Avoid Aadhaar eSign Errors
- Make sure you keep your mobile number in active use.
- Make sure your files are in PDF format prior to uploading.
- Beware of public Wi-Fi when using it to ensure that you do not experience sessions and OTP issues.
- Choose a trusted Aadhaar eSign API provider like Surepass to integrate seamlessly and provide help.
Conclusion
Aadhaar eSignature is a powerful device for document verification using digital However, as with all technologies has its limitations. It is susceptible to errors caused by users and systems. Being aware of the typical Aadhaar eSign mistakes and the best way to correct these will save you the time of users, lessen stress and provide a seamless signature of documents.
If you're a user on your own or a business owner the developer who is integrating Aadhaar eSign into your application being aware and ready to resolve issues could be the key to success.
About the Creator
Akhil Sharma
I'm Akhil sharma, a dedicated digital marketer at SurePass, a leading provider of API and background verification solutions. With a passion for leveraging technology to streamline processes and enhance security.



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