DCQL: multiple instances of one credential (bank statements)

Scenario

A loan provider assesses an application and needs six recent BankStatement credentials. multiple: true lets the wallet return several instances of the same credential type in one presentation.

Prerequisites

• An iGrant.io Organisation Wallet Suite (OWS) API key. Get it from support@igrant.io. Keep it on the server, in an environment variable or a secret manager. The browser never sees it.
• The OWS environment the key belongs to. The default is demo (https://demo-api.igrant.io). Use staging (https://staging-api.igrant.io) only when the integrator asks for it. A key works only in its own environment.