E-invoicing: Peppol and myDATA

#What is e-invoicing?

E-invoicing is the electronic exchange of invoice documents in a standardized format between trading partners. Instead of PDF or paper invoices, e-invoicing uses structured data that can be automatically processed by receiving systems. E-invoicing improves accuracy, reduces processing time, and enhances audit trails.

Good to know: Many countries now mandate e-invoicing for B2B transactions. Light supports e-invoicing configuration through entity settings and tax code EDIFACT codes.

#Supported networks

Light supports e-invoicing via the following networks:

• Peppol: Pan-European Public Procurement OnLine network, used across 40+ countries
• myDATA: Greece's national e-invoicing system
• Nemhandel: Denmark's national e-invoicing network (interoperable with Peppol)
• SDI: Italy's Sistema di Interscambio
• Verifactu: Spain's invoicing compliance system
• Portuguese tax reporting: Portugal's e-invoicing and tax reporting

Each network has different onboarding and configuration requirements. This article focuses on Peppol and myDATA (see sections below).

#Peppol network overview

Peppol (Pan-European Public Procurement OnLine) is a free, open network for electronic business document exchange. Key Peppol features:

• Standardized Formats: Uses UBL (Universal Business Language) XML format
• Network Operators: Routes documents through certified service providers
• Global Coverage: Supports 40+ countries and expanding
• Mandatory in Many Jurisdictions: EU countries and others require Peppol for B2B invoicing
• Free to Join: No licensing fees for network participation

#myDATA network overview

myDATA is Greece's national e-invoicing network, required for businesses operating in Greece. Key myDATA features:

• Greece-Specific: Used for Greek tax reporting and compliance
• Simplified Onboarding: Does not require a registration workflow or document verification (unlike Peppol)
• Immediate Availability: Once configured on your entity, myDATA integration is active

Note: myDATA onboarding does not require uploading proof-of-ownership documents or waiting for verification. myDATA also does not use an EAS code or e-invoice address on your entity — once your entity's company details (such as country and VAT number) are in place, you can begin sending invoices.

#Configuring e-invoicing on entities

Each company entity can have e-invoicing details configured:

1. Go to
2. Click + Create entity (for new entities) or click an existing entity and then Edit
3. In the E-invoicing (optional) section, fill in:
   • EAS code: The Electronic Address Scheme identifier (e.g., 0007 for a Swedish organization number, 9930 for a German VAT number)
   • E-invoice address: The network address for this entity (e.g., your Peppol identifier)
4. Click Create or Save

Note: E-invoice address details (EAS code and e-invoice address) are not used for the myDATA and Verifactu networks. For Peppol, Light fills in these details automatically when your registration completes (see below).

Tip: Different entities within your group can have different network registrations based on their jurisdiction.

#EAS codes

The EAS code identifies the type of addressing scheme used for your e-invoicing identifier. Common EAS codes include:

• 0007: Swedish organization number
• 0184: Danish CVR number
• 9930: German VAT number
• 0204: German Leitweg-ID (used for German public-sector/B2G customers)
• Other country-specific codes as required by your jurisdiction

Consult your jurisdiction's requirements to determine the correct EAS code.

#EDIFACT codes on tax codes

Tax codes in Light include an optional EDIFACT field that supports e-invoicing compliance:

1. Go to
2. Click + Create tax code or edit an existing tax code
3. Select the appropriate EDIFACT (optional) code from the dropdown
4. This EDIFACT code is included in e-invoice documents to classify the tax treatment

#Registering on the Peppol network

To send and receive invoices via Peppol, register your entity directly from Light — Light handles the network registration through its e-invoicing provider:

1. Make sure your entity's company details are complete (country and VAT number are required; a business registration number is also needed for sending e-invoices)
2. Start the Peppol registration for your entity
3. When verification is requested, upload a proof-of-ownership document in Light
4. Wait for the registration to complete — the registration moves through the statuses Created, Pending verification, Registration pending, and finally Registration completed (or Registration failed)
5. Once registration completes, Light automatically fills in the EAS code and E-invoice address on your entity

Your Peppol identifier is unique and identifies your organization on the network. If you only need to send invoices (not receive them), a sending-only Peppol registration is also available.

Note: Peppol onboarding requires document verification. You'll need to upload a proof-of-ownership document and wait for verification before you can send invoices via Peppol. If a registration fails, you can resubmit the verification document to retry.

#Best practices

• Register entities for e-invoicing before mandate deadlines in your jurisdiction
• Verify EAS codes and e-invoice addresses are correct before sending invoices
• Configure e-invoicing details on all entities that will participate in electronic document exchange
• Assign the correct EDIFACT codes to tax codes used in e-invoicing transactions
• For Peppol: monitor the registration status and respond promptly to verification requests
• For myDATA: ensure your Greek tax registration details are up to date on your entity

#Related articles

• Managing Entities
• Tax and VAT Configuration
• Currency Settings