What is Document Type Identifier and Process Identifier in Peppol network?
Short answer
The Document Type Identifier determines what type of electronic document is sent in the Peppol network — for example, an invoice or a credit note according to a specific specification. The Process Identifier determines the business process in which this document is processed. Both are purely technical routing identifiers — they do not contain invoice numbers, amounts, or other business data, and are not directly encountered by the average user of invoicing software.
What document?
Determines whether it is an invoice, credit memo, or other document type.
In what process?
Specifies the business process to which the document belongs.
Part of Participant Lookup
The system verifies what the recipient declares as supported in the SMP before sending.
Routing only
XML continues to be validated by EN 16931 and Peppol BIS Billing.
Conclusion
Document Type Identifier and Process Identifier together ensure that Peppol knows what is being sent and in what process — setting them correctly is a condition for delivery, not a substitute for content validation.
Not legal advice. Machine-translated answer, not yet manually reviewed. For the exact wording, see the Slovak original.