CXML-PAYLOADID

cXML PayloadID is the payloadID attribute of the root element that uniquely identifies each emitted message. Convention: .@.

Definition

PayloadID is critical for receiver-side idempotency: the same payloadID received twice must be processed once. Ariba's recommended convention is ..@, e.g. 1683024000000.123.456@buyer.example.com.

Origin

Present since cXML 1.0; its format convention derives directly from RFC 5322 Message-ID notation (email).

Use

PayloadID is logged on both buyer and supplier sides. On error (5xx, timeout), retransmission keeps the same payloadID, letting the receiver detect duplicates and avoid re-creating the order.

Related terms

• cXML — the parent standard.
• Idempotency — the targeted property.
• cXML Transmission — transport context.
• Trace ID — a related observability concept.