Glossary

Glossary

Term	Meaning
PCN	Plex Customer Number — one Plex facility/instance. One PCN per Fuuz tenant.
Spoke	A site tenant holding one ERP instance, vendor-shaped. This package installs into a spoke.
Hub	The enterprise tenant that harmonises across spokes. A different package.
Keyring	The pattern: spokes hold the vendor's own shape, the hub holds the canonical one.
externalId	The vendor's own key, verbatim. The upsert key.
id	Same value, copied by a create trigger — because the platform enforces a foreign key only when it targets id.
dedupeKey	sourceSystemId:externalId. Not the local key — this is for the hub, where several spokes share a model.
rawPayload	The verbatim vendor record for the row.
Dictionary	A dated harvest of Plex's published API documentation from developers.plex.com — the catalogue, its operations and their response schemas. The models are generated from it.
sourceVersion	The dictionary stamp the model was generated from. A row still stamped with an old date tells you how old the contract behind it is.
Forward relation	Child → parent. invoice.supplier.
Reverse collection	Parent → children. supplier.supplierAccountsPayableInvoices. A Fuuz relation is declared from both ends.
loadLayer	Where an endpoint sits in the load order. Everything it references is in a lower layer.
Sub-resource	An endpoint whose URL contains a path parameter, e.g. /approved-suppliers/{id}/prices.
Switchboard	plexKeyringGets — the configuration listing all 182 endpoints and which are enabled.
Create trigger	A JSONata expression the platform runs on insert. Used here to derive id and, for keyless lookups, externalId.
Standard / Configurable / Custom	Works as installed / works once you supply a value / needs development.