No instrument or refund is registered for that provider reference

A provider notification arrived naming a provider_code and provider_ref that CreateInstrument (or Refund) never registered. Two rules share the code, one per direction.

What to do

You will not normally cause this: it is what paygate answers a provider that sends a callback for something it never created here. If you are replaying callbacks in test mode, replay them for references that exist in the same mode. A genuine occurrence in live is worth reporting — it means a provider is notifying us about an object we have no record of.