Cover announcements and reimbursement agents

IN ONE LINE

Analogy: calling ahead, and a separate delivery.

Imagine you call a friend abroad to say "a parcel is coming for you, here is everything about it" — then the parcel itself travels through one or two courier depots you never mentioned on the call, before it reaches your friend's local depot.

The call went straight to the destination; the parcel took its own route through whichever depots could actually carry it.

A cover payment works the same way: the pacs.008 announcement goes directly to the creditor's bank, while the money travels separately through however many correspondent banks it takes to get there — and those correspondents have their own name in the message: reimbursement agents.

WHAT IT ACTUALLY IS

A reimbursement agent is a correspondent bank that carries the cover value between the debtor agent and the creditor agent — distinct from the creditor agent itself, which only receives the announcement.

The instructing reimbursement agent is the correspondent the debtor agent's cover payment goes to first; the instructed reimbursement agent is the correspondent that ultimately credits the creditor agent's account, completing the reimbursement.

When one bank happens to serve both roles — the debtor agent's and creditor agent's shared correspondent — a single reimbursement agent is enough.

When it does not, the cover has to pass through more than one.

HOW IT WORKS

The reimbursement agent role exists because the announcement and the cover are not required to travel the same path.

The creditor agent needs to know, from the announcement alone, which correspondent to expect the cover value from — otherwise a credit notification arriving from an unnamed bank is just money with no context.

Naming the instructing and instructed reimbursement agents in the pacs.008 gives every bank that later reads the message the same answer to "who is actually carrying the funds", independent of whichever bank happens to be the creditor agent for this payment.