Greek VAT number validation via GSIS

Developing

IMPACT DEMO API

https://einvoiceapiuat.impact.gr

POST

/Tools/ValidateGreekVat

This POST API call, provides clients with the ability to validate Greek VAT Numbers (AFM) through the Greek General Secretariat for Information Systems (GSIS).

Request

Header Params

Body Params application/jsonRequired

Example

{
    "UserName": "string",
    "Password": "string",
    "callerTin": "string",
    "CalledFor": "string"
}

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location 'https://einvoiceapiuat.impact.gr/Tools/ValidateGreekVat' \
--header 'APIKey;' \
--header 'Content-Type: application/json' \
--data '{
    "UserName": "string",
    "Password": "string",
    "callerTin": "string",
    "CalledFor": "string"
}'

Responses

🟢200Success

application/json

Bodyapplication/json

Example

{}

Modified at 2026-10-14 14:02:18

Archiver Functionality

European VAT number validation via VIES