The myDATA Settings tab manages the API credentials for connecting to the AADE myDATA electronic invoicing platform, separately for the testing and production environments.
Navigation: Settings → Communication & Notifications → myDATA Settings
| Field | Description |
|---|---|
| Issuer VAT Number | The VAT number of the invoice issuer |
| Branch | The AADE branch code |
| Environment | Toggle between Testing (Dev) and Production environment |
Each environment has its own credentials — only the active one (selected in "Environment") is used when sending invoices:
| Field | Description |
|---|---|
| Dev User ID | The user ID for the testing environment |
| Dev Subscription Key | The API key for the testing environment |
| Production User ID | The user ID for the production environment |
| Production Subscription Key | The API key for the production environment |
After saving, the system automatically verifies the credentials with AADE myDATA and displays the result.
myDATA is the Greek tax authority's (AADE) electronic invoicing platform. Required for Greek businesses.
Subscription Keys are stored encrypted and are never displayed in plain text.