Improve AMS error experience (#1247)

Co-authored-by: Stephan Hesselmann <[email protected]>

pkg/errors/errors.go

@@ -717,11 +717,9 @@ func OrganisationNameInvalid(externalID string, name string) *ServiceError {
 // FailedClusterAuthorization converts the error to a ServiceError and returns a reason and hint for the user.
 func FailedClusterAuthorization(err error) *ServiceError {
 	svcErr := ToServiceError(err)
-	reason := "failed to reserve quota"
-	// Visiting the OpenShift page in console registers the user and their organisation with OCM.
-	// See https://issues.redhat.com/browse/SDB-3194 for more context.
-	if svcErr.Is404() {
-		reason += " - visit https://console.redhat.com/openshift and try again"
+	reason := "failed to use ACSCS subscription"
+	if svcErr.IsForbidden() {
+		reason += " - please contact your administrator to ensure that your Red Hat account has the RedhatManagedCluster permission."
 	}
 	return NewWithCause(svcErr.Code, svcErr, reason)
 }