# VAT Quality Indicators

> Quality indicator codes returned by Egon VAT services for VAT number validation and company data extraction, with the meaning of each code.

Reference codes returned for VAT number validation and corporate data extraction in Egon VAT services.

## Quality Codes

Detailed quality indicators describing VAT numerical validity, check-digit calculations, country code matching, and economic activity validation.

| Flag | Code | Description |
| --- | --- | --- |
| 0 (OK) | 0 | OK |
| 1 (Changed) | 901 | Date of birth not present |
| 1 (Changed) | 902 | Gender not present |
| 1 (Changed) | 903 | Different tax code due to omocodia (digits replaced by letters) |
| 1 (Changed) | 904 | Ambiguous characters |
| 1 (Changed) | 905 | Uppercase characters |
| 1 (Changed) | 906 | Double name |
| 1 (Changed) | 907 | Double surname |
| 1 (Changed) | 908 | Inverted name and surname |
| 1 (Changed) | 909 | Inverted VAT number and tax code |
| 1 (Changed) | 998 | Logic error |
| 1 (Changed) | 999 | Not processed |
| 2/3 (Not valid) | 401 | Code not present |
| 2/3 (Not valid) | 402 | Wrong format |
| 2/3 (Not valid) | 403 | Wrong code |
| 2/3 (Not valid) | 404 | Not numerical |
| 2/3 (Not valid) | 405 | Code too long |
| 2/3 (Not valid) | 406 | Wrong date of birth |
| 2/3 (Not valid) | 407 | Incongruent date of birth |
| 2/3 (Not valid) | 408 | Incongruent gender |
| 2/3 (Not valid) | 409 | Wrong tax office code |
| 2/3 (Not valid) | 410 | Incongruent tax office code |
| 2/3 (Not valid) | 411 | Incongruent National Identifier |
| 2/3 (Not valid) | 412 | Incongruent VAT number |
| 2/3 (Not valid) | 413 | Surname not present |
| 2/3 (Not valid) | 414 | Name not present |
| 2/3 (Not valid) | 415 | Date of birth not present |
| 2/3 (Not valid) | 416 | Gender not present |
| 2/3 (Not valid) | 417 | Place of birth not present |
| 2/3 (Not valid) | 418 | Wrong check-digit |
| 2/3 (Not valid) | 419 | Wrong surname |
| 2/3 (Not valid) | 420 | Wrong name |
| 2/3 (Not valid) | 421 | Wrong place of birth |
| 2/3 (Not valid) | 422 | Inconsistent surname |
| 2/3 (Not valid) | 423 | Inconsistent name |
| 2/3 (Not valid) | 424 | Wrong month of birth |
| 2/3 (Not valid) | 425 | Wrong day of birth |
| 2/3 (Not valid) | 426 | Wrong gender |
| 2/3 (Not valid) | 427 | Place of birth not found |
| 2/3 (Not valid) | 428 | Invalid data |
| 2/3 (Not valid) | 429 | Year of birth not numerical |
| 2/3 (Not valid) | 430 | Month of birth not numerical |
| 2/3 (Not valid) | 431 | Day of birth not numerical |
| 2/3 (Not valid) | 432 | Ambiguous place of birth |
| 2/3 (Not valid) | 433 | Incongruent place of birth |
| 2/3 (Not valid) | 434 | Double name |
| 2/3 (Not valid) | 435 | Double surname |
| 2/3 (Not valid) | 436 | Cadastral code not found |
| 2/3 (Not valid) | 437 | Province code not found |
| 2/3 (Not valid) | 438 | Wrong VAT number |
| 2/3 (Not valid) | 439 | Not numerical VAT number |
| 2/3 (Not valid) | 440 | VAT number not present |
| 2/3 (Not valid) | 441 | Mandatory data not present |
| 2/3 (Not valid) | 444 | Tax code not present |
| 2/3 (Not valid) | 445 | Economy activity code not found |
| 2/3 (Not valid) | 446 | Old economy activity code not found |
| 2/3 (Not valid) | 447 | VAT number in the tax code field |
| 2/3 (Not valid) | 448 | Tax code in the VAT number field |
| 2/3 (Not valid) | 449 | Wrong tax office code |