// defined.
			if _, ok := c.arnProviderCfgsMap[DummyRoleARN]; ok {
				return c, errSingleProvider
			}
		}

		c.arnProviderCfgsMap[arnKey] = &p
		c.ProviderCfgs[cfgName] = &p

		if err = c.PopulatePublicKey(arnKey); err != nil {
			return c, err
		}
	}

	c.Enabled = true

	return c, nil
}

// ErrProviderConfigNotFound - represents a non-existing provider error.