> For the complete documentation index, see [llms.txt](https://docs.emudhradigital.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emudhradigital.com/api-reference/esign-v3-api-ca-ekyc-account/esign-v3-error-codes.md).

# eSign v3 Error Codes

| Range        | Category           | Examples                                                                                                                                                    |
| ------------ | ------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 101–114, 199 | Request / response | 101 invalid format · 104 XML signature validation failed · 107 invalid digital signature · 112 duplicate `txn` · 113 user timeout · 114 invalid credentials |
| 201–206, 299 | Document           | 201 invalid hash · 202 invalid response signature type · 206 cancelled by user                                                                              |
| 301–303, 399 | Status check       | 301 invalid format · 302 transaction not found · 303 invalid version                                                                                        |
| 401–420, 499 | Bank KYC           | 402 invalid bank signature · 405 duplicate `txn` · 420 invalid photo                                                                                        |
| 501–521, 599 | Organisational KYC | 506 invalid Org ID · 509 invalid signatory certificate · 521 physical verification mismatch                                                                 |