What additional fields are required for B2G?

"DocumentTypeCode": "ELB2G",
This field indicates that this is a B2G invoice

"CounterParty": {
		"RegisteredName": "ΔΗΜΟΣ ΑΘΗΝΑΙΩΝ"
         Description-Name of the Contracting Authority responsible for the accounting of the Electronic Invoice		

"Recipient": {
			"RegisteredName" : "ΑΠΟΘΗΚΗ ΤΡΟΦΙΜΩΝ"
		     In the case where the expenditure concerns a different physical recipient or any department to which the responsibility has been delegated by law. Else the same value with  "CounterParty": "RegisteredName"
		
"Recipient": {
        "ExternalCode:"3516" => INTERNAL FOOD STORAGE CODE		
We can set an identifier for the internal location where the goods and services are delivered
		
"CounterParty":
		"Vat":"999336270"
		
		BT-48 : VAT OF THE BUYER 
	

"CorrelatedInvoices": [400001899769322],
     "GsisRelatedInvoices": ["097000029|13/02/2023|0|1.1|ΤΔΑ|33"]

		In case of associated invoices=> "InvoiceTypeCode": "5.1",
		the fields must be completed
		α)CorrelatedInvoices 
			The invoice Mark relating to the credit.		
        
        β)GsisRelatedInvoices 
			BT-1 : Unique Electronic Invoice Code used for its identification by the KED
			In the form of "ISSUER VAT | DATE ISSUED | INSTALLATION NO. | TYPE OF DOCUMENT | SERIES| NUMBER"
		
		In case of a non associated credit => "InvoiceTypeCode": "5.2, the fields are not completed


Some B2G fields gathered in a new object called B2GDetails which contains the following info:

"B2GDetails": {
		"ContractingAuthorityCode": "1015.E00159.0001",
		"ContractingAuthority":"ΓΕΝΙΚΟ ΝΟΣΟΚΟΜΕΙΟ ΑΤΤΙΚΗΣ "Ο ΕΥΑΓΓΕΛΙΣΜΟΣ", 
		"ContractTypeCode": "2|2018ΕΠ06600057", 
		"ContractReferenceCode": "20SYMV006467658" 
}

Explanation
		"BT-??" stands for Greek Data Format Specifications Peppol-Bis 
		
		1.ContractingAuthorityCode (BT-46) :
		
		Code (Label) of Contracting Authority / Contracting Entity for the Greek Public Sector 
        https://webapps.gsis.gr/dsae2/foreisreg/faces/pages/mainmenu/anOikYpList.xhtml

		2.ContractingAuthority 
		Name of Contracting Authority automotically validated and filled using KED service online 

		3.ContractTypeCode: (BT-11)
		
		The field is used as the Contract Identifier for the budget type and takes the values:
			«1| web posting number of assignment(ADA) » when it concerns the Regular Budget
			«2| Coded Enarithm» when it concerns the Public Investment Programme (PDE)
			«3| web posting number of assignment» when it concerns other budgets
			
		4.ContractReferenceCode: (BT-12) 
		
		The recognition of a contract.
			In this field shall be filled in with the Contract Registration Number (RIN) of the		
            If there is no written contract (commissions under 2.500€) it settled to «0|< web posting number of assignment (ADA)>», whether or not there is an obligation to post on the Central Electronic Register of Public Procurement(KIMDIS).
			*In case of credit the value is 0
	}



"Details": [
	{
        -"CpvCode": "15511000-3",
		  Identifier for classifying an item by its type or nature.
		  Soon it will be required.	 
          https://simap.ted.europa.eu/cpv

		-"measurementUnitCodeEN" : "H87"
	      Identifier for the measurement unit which can  be found in the following page:

…

When should I classify an invoice as ELB2G?

B2G stands for Business-to-government, implying the relationship between a business to government agencies and government institutions. B2G is defined as a sales model when companies sell products, services and information to governments or government agencies.

How do I get updated about B2G status updates?

1st option: This information is recorded in the history of the document in the Softone’s Portal and the customer can view any update of the document status manually from there.


2nd option: Using and programming an API, the customer can get automated updates on the current status of the B2G document through his ERP.

Useful links for B2G

• Follow these useful links regarding the correct completion of B2G documents:
  Registers of entities maintained by the General Secretariat of Public Administration Information Systems (GIPSDD)
  https://webapps.gsis.gr/dsae2/foreisreg/faces/pages/mainmenu/anOikYpList.xhtml
  
  

• Cpv Codes Code Book
  CPV is a classification system for public procurement, which aims to standardize reports, used by contracting authorities when describing the subject of public contracts
  https://simap.ted.europa.eu/el/web/simap/cpv
  
  

• Peppol units of measure
  Most common
  https://docs.peppol.eu/poacc/billing/3.0/codelist/UNECERec20/