How to Issue a B2G Invoice to the Greek Public Sector
Issuing an invoice to a Greek public sector body works like a regular invoice: turn on the B2G switch, complete the B2G Details and the CPV code, then click Issue.
Issuing a B2G invoice to the Greek public sector is not very different from issuing a regular invoice. You only need to turn on the B2G switch and fill in a few extra fields. Here are the steps in detail.
Step 1: Turn on the B2G switch
Select the invoice type you want to issue and, once you land on the invoice form, turn on the B2G switch.

Step 2: Select the customer
Pick a customer from the Customer field. If the customer is new, click Add New Customer.

Step 3: Select the payment method

Step 4: Fill in the B2G Details
Complete the fields in the B2G Details section, such as the contracting authority code (AAHT) and the contract identifiers.

- The Payment Due Date field is optional and can stay empty.
- The Payment Information field is mandatory. If you have no specific instruction for it, you can repeat the payment method (for example On Credit) or enter a dash (-).
Step 5: Fill in the Services
Complete the fields in the Services section.

The CPV code field is the only extra field the B2G protocol requires per service line.
Step 6: Issue the invoice
Once you have checked that everything is correct, select Issue.

Frequently asked questions
How is a B2G invoice different from a regular invoice in Greece?
Only in the extra fields: the B2G Details section (contracting authority, ADAM, ADA, payment information) and a CPV code on each service line. Everything else works like a normal invoice.
What do I put in Payment Information if I have no instruction?
The field is mandatory. If you have no specific instruction, repeat the payment method (for example On Credit) or enter a dash (-). The Payment Due Date field is optional.
Is the CPV code mandatory on a Greek B2G invoice?
Yes. It is the only extra field the B2G protocol requires in the services section, classifying your product or service under the EU Common Procurement Vocabulary.
How does the B2G invoice reach the public sector body?
It is transmitted electronically through a licensed e-invoicing provider (YPAHES). Wrapp is an AADE-certified provider, so when you click Issue the invoice is sent automatically to the public sector and to myDATA.
Need help?
If you have a question about this topic or want to make sure everything is set up correctly, contact us and we will look at it together.