422
providers.no_credentialprovidersRule R10No valid credential for this provider, tenant and mode
The provider requires a credential and none is valid for this tenant, or the platform, in this mode. A health error sample is recorded, so this shows up in provider health as well as in your response.
Why the API refuses
WHEN an adapter call is made for a provider whose credential_required is true and no credential is valid for the provider, the tenant or the platform, and the mode, THE SYSTEM SHALL reject it and record a health error sample.
What to do
Nothing you can fix from the API. This is a platform configuration gap — most often a test-mode credential missing for a provider that has live credentials, or one that has expired or been revoked. Report it with the X-Request-Id; meanwhile another method will route.