storageLayerID identifies a compartment within a storage unit or equipment (a shelf, rack, box, or similar). Every storage unit also has a root compartment whose storageLayerID is returned by GET /storage/{storageID}.

To retrieve the parent storage unit's storageID from a known storageLayerID, use ?$expand=storage — the parent's storageID is then available as storage.storageID on the response.

$expand values (separate with a comma for multiple expands):

• storage
• location
• storageLayers
• samples
• managers
• reservations / allReservations
• activeReservation
• activeValidation
• statistics

Note: if you use the expand storageLayers and statistics simultaneously then statistics will also be added for the child storage layers.