Invoicing & myDATA

Overview

The invoicing module handles all aspects of invoice management, from creation to AADE myDATA electronic transmission.

Creating an Invoice

1. Navigate to ERP → Invoices → New Invoice
2. Select the customer (or create a new one)
3. Add line items with descriptions, quantities, and prices
4. Select the invoice type (retail, service, credit note, etc.)
5. VAT is calculated automatically based on item categories
6. Click Save to create as draft, or Issue to finalize

Invoice Types

Type	Code	Description
Retail Invoice	1.1	Standard B2C invoice
Service Invoice	2.1	Service-based invoice
Credit Note	5.1	Refund/correction document
Self-Use	3.1	Internal consumption

AADE myDATA Integration

For Greek businesses, the module supports electronic invoice transmission to AADE (Independent Authority for Public Revenue):

Setup

1. Go to ERP → Settings → myDATA
2. Enter your AADE User ID and Subscription Key
3. Select environment (Test or Production)
4. Test the connection

Transmitting Invoices

After issuing an invoice:

1. Click Send to myDATA
2. The system transmits the invoice electronically
3. You receive a MARK (unique identification number) from AADE
4. The MARK is stored and displayed on the invoice

Income Classification

Each invoice line item requires an income classification code for myDATA. The system provides common defaults:

Category	Code	Description
Product Sales	E3_561_001	Sale of goods
Service Revenue	E3_561_003	Service income
Other Income	E3_561_007	Other revenue

caution

MyDATA integration requires valid AADE credentials. Test thoroughly in the sandbox environment before sending real invoices.