eINVOICING
  1. POS Integration
eINVOICING
  • eInvoicing Service
    • About Us
    • What We Offer
    • Changelog
    • On Boarding
    • FAQ (EN)
    • FAQ (GR)
    • eInvoicing Service API
      • API Authentication
        • API Key Authentication
          • /Authentication/login
            POST
        • Bearer Token Authentication
          • Authentication Login Bearer Token
            POST
          • Authentication Refresh
            POST
      • API Endpoints
        • API Validations
        • Sending a Document
          • Sending a Document
          • Mandatory and Optional (Best Practice) Fields Descriptions
          • Mobile Notifications
          • IAPR SIGN POLICY METHODS
          • QR OF THE DOCUMENT
          • Record Type
          • Invoice/json
            POST
          • /Invoice/credit
            POST
        • Purchase Orders for F&B
          • FnB Purchase Orders Documentation
          • Offline QR Code Implementation
          • Retrieve Open Order Documents (FnB)
            GET
        • Document Management
          • Retrieving a document
          • PDF Invoice as an Attachment
        • Alternative Currency Holding
          • ALTERNATIVE CURRENCY (AC)
        • Heating Allowance
          • Heating Allowance Requirements
        • Delivery Notes
          • Delivery Notes Documentation
          • /Invoice/cancelDeliveryNote
            POST
        • POS Integration
          • POS Integration
          • POS Offline QR Code Implementation
          • Offline POS Connection Procedure
          • /PosSignatures/{issuerTin}
            POST
          • /Receipt
            POST
          • /PosTransactions/signpos
            POST
        • Delayed POS Payment
          • Delayed POS Payment
        • B2G Documents
          • B2G Documents
          • B2G Mandatory Fields
          • B2G Status response
          • B2G Soft Reject
          • RESEED INVOICE
          • BT-10 BuyerReference
          • B2G fields for ERP Configurator 3
          • ΕΓΚΥΚΛΙΟΣ ΠΡΟΣ ΠΑΡΟΧΟΥΣ-ΠΡΟΜΗΘΕΥΤΕΣ ΥΠΗΡΕΣΙΩΝ ΥΓΕΙΑΣ ΓΙΑ ΤΗΝ ΗΛΕΚΤΡΟΝΙΚΗ ΤΙΜΟΛΟΓΗΣΗ
          • /B2GInvoice/ReSeedInvoice
            POST
          • /B2GInvoice/GetLastStatus
            GET
      • JSON Structures & Payloads
        • EliseCoreDocument Structure
          • EliseCoreDocument Structure
        • Minimum & Conditional Fields
          • Minimum & Conditional Fields
        • Response Examples & Error Handling
          • Response Examples & Error Handling
      • Offline QR Code
        • Offline QR Code Instructions
      • Status MyData
        • MyData/status
          GET
      • Extra Functionalities
        • Archiver
          • Archiver Functionality
      • Terminology
        • Document Type Codes
        • VAT & TAX Codes
        • Country & Currency Codes
        • Measurement Unit Codes (IAPR & EN16931)
        • Self-Billing Remarks (IAPR)
        • Classification & Payment Method Codes (IAPR)
        • Special Invoice Category
      • VAT Validation
        • Greek VAT Check
        • EU VAT Check
      • Attachments
        • Attaching Media & PDFs
        • Parallel PDF Viewing (pdfUrl)
        • Invoice Document Upload (Invoice/File)
      • SOFTONE ERP Related Segments
        • SOFTONE Configurator
          • SOFTONE Configurator - B2G Mapping
    • eInvoicing Portal
      • Template Configuration (Default Template)
      • Single Sign-On (SSO)
        • Single Sign-on (SSO) Setup Instructions
        • Single Sign-On (SSO)
    • WIKI JSON Samples
      • 1.1 B2B
      • 1.3 B2B Sales Invoice Third Country
      • 5.2 B2B Credit Invoice Non-Associated
      • 2.1 B2B Service Rendered Invoice
      • 1.1 Debit B2G
      • 11.1 B2C Retail Sales Receipt
      • 11.4 Retail Sales Credit Note
  1. POS Integration

Offline POS Connection Procedure

Decision A.1102/01-07-2024
(https://www.aade.gr/egkyklioi-kai-apofaseis/1102-01-07-2024
), which concerns the determination of the scope, timing, method, and procedure for connecting Electronic Funds Transfer means at the point of sale (EFT/POS).
Regarding connection loss, the decision specifies the following:
“In the event of a loss of connection either between the ERP Cash System and the Electronic Invoicing Service Provider (ΥΠΑΗΕΣ) or the Fiscal Device (ΦΗΜ), or between the Electronic Invoicing Service Provider (ΥΠΑΗΕΣ) or the Fiscal Device (ΦΗΜ) and the Independent Authority for Public Revenue (AADE) for the transmission of the relevant data to the myDATA digital platform, the provisions of paragraph 6, article 5 of Joint Decision A.1138/2020 of the Deputy Minister of Finance and the Governor of AADE shall apply.”
For your convenience, below is also the link to Decision A.1138/2020, which you can refer to regarding the time frame for transmitting the summary of invoices:
https://www.aade.gr/sites/default/files/2024-07/a.1138_2020_kwdikopoiimenime_a.1048_a1049_2024.pdf
If you encounter any difficulty with this functionality, please contact the implementer of your POS system.

Offline POS Connection Procedure#

1.
Activation of “Autonomous Mode”
The POS device is set to autonomous mode, allowing transactions to be processed without a network connection to the provider.
2.
Declaration of POS Offline Operation to AADE
A declaration is submitted to AADE stating that the specific POS device operates in Offline Mode, according to the Authority’s instructions and standards.
3.
POS Configuration for Offline Use
The POS device is switched to Offline Mode either through an API call or a local setting (e.g., an activation button).
4.
Activation via ERP
After completing the above steps, an API call is made from the ERP to the POS to unlock and activate the device (Signpos), enabling it to accept offline transactions.
Modified at 2025-10-29 12:52:50
Previous
POS Offline QR Code Implementation
Next
/PosSignatures/{issuerTin}
Built with