BDXL
NAPTR-based dynamic discovery mechanism used by the Peppol SML.
Definition
BDXL hashes the participant identifier, places it in a DNS zone, and publishes a NAPTR record whose regexp field rewrites the query into an SMP URL. It is the evolution of plain DNS discovery that makes location dynamic rather than hard-coded.
Origin
Specified by OASIS, « Business Document Metadata Service Location Version 1.0 » (BDXR Technical Committee), building on DNS NAPTR records (RFC 3403).
Example in context
A « U »-flag terminal NAPTR returns a regexp such as !^.*$!https://smp.example.eu/! that yields the base URL of the SMP to query.