Explore Alexandria · Optio Alexandria

Data Command Query Event In-process Scroll or drag to pan · Ctrl + scroll or pinch to zoom

Notes

Explore Alexandria 5 of 6

Illustrative payment system · authored sample knowledge

Follow the refund flow. A separate operation links the request and its later processor confirmation to the original payment.

Trace later business actions without losing the original context.

Request refund-1001 · Merchant support → Payment service · Command · Network · Payment service API Support requests EUR 10000 against pay-1001. refund-1001 uses its own operation key refund-op-1001 and initially remains requested.
Read an order’s payment evidence · Merchant support → Payment service · Query · Network · Payment service API Support reads pay-1001 and its recorded source before deciding whether to request the refund. No bank balance or settlement observation is shown.