Presence error codes (mpbx-presence)

Codes raised by mpbx_presence (W3-PRES-01). SUBSCRIBE refusals are SIP status codes, not error codes; they are listed in docs/guides/presence.md. Messages never contain a SIP request, a credential or a call party. Guide: presence.md.

Code	Kind	Meaning	What to do
MPBX-PRESENCE-CONFIG	config	A value of [presence] in mpbx.toml is out of range (for example min_expires_secs above max_expires_secs, a cap of 0, recheck_secs above 3600). mpbx run refuses to start and names the key.	Fix [presence]; the guide lists every key and its default.
MPBX-PRESENCE-STATE-DECODE	internal	A live presence or BLF record in Valkey does not have the expected shape (written by another version, or edited by hand). The record is ignored; the next change of that extension or user rewrites it.	Nothing, unless it repeats: then check that every engine node runs the same version.