Several Annexes
It is possible to have one e-invoice a number of annexes?
Short answer
Yes. Supporting documents (BG-24) v Peppol BIS Billing 3.0 has a cardinality of 0.n, which means he's in one e-invoice can repeat as many times as the annexes are needed, so the invoice may contain several separate annexes simultaneously, not just one.
BG-24
Supporting documents
Group of invoice supporting documents.
Cardinality 0.n
Any number of occurrences
An invoice may have zero, one or more annexes.
DE-R-022
Unique file names
Two annexes may not have the same name in one invoice.
Single reference
For each annex
Each annex has its own identifier and optional description.
Conclusion
e-invoice may contain any number of attachments thanks to the replicable group BG-24, but each annex shall have a unique file name.
Sources
- Peppol BIS Billing 3.0Group BG-24 (Supporting documents)
- Peppol BIS Billing 3.0, rule DE-R-022 (uniqueness of file names of attachments)
Not legal advice. Machine-translated answer, not yet manually reviewed. For the exact wording, see the Slovak original.