diff --git a/pkg/services/ngalert/api/api_provisioning.go b/pkg/services/ngalert/api/api_provisioning.go
index edfb8b1b248..a7bec82dd88 100644
--- a/pkg/services/ngalert/api/api_provisioning.go
+++ b/pkg/services/ngalert/api/api_provisioning.go
@@ -330,6 +330,9 @@ func (srv *ProvisioningSrv) RoutePostAlertRule(c *contextmodel.ReqContext, ar de
 		return ErrResp(http.StatusBadRequest, err, "")
 	}
 	if err != nil {
+		if errors.Is(err, alerting_models.ErrAlertRuleUniqueConstraintViolation) {
+			return ErrResp(http.StatusBadRequest, err, "")
+		}
 		if errors.Is(err, store.ErrOptimisticLock) {
 			return ErrResp(http.StatusConflict, err, "")
 		}
@@ -352,6 +355,9 @@ func (srv *ProvisioningSrv) RoutePutAlertRule(c *contextmodel.ReqContext, ar def
 	updated.UID = UID
 	provenance := determineProvenance(c)
 	updatedAlertRule, err := srv.alertRules.UpdateAlertRule(c.Req.Context(), updated, alerting_models.Provenance(provenance))
+	if errors.Is(err, alerting_models.ErrAlertRuleUniqueConstraintViolation) {
+		return ErrResp(http.StatusBadRequest, err, "")
+	}
 	if errors.Is(err, alerting_models.ErrAlertRuleNotFound) {
 		return response.Empty(http.StatusNotFound)
 	}
@@ -473,6 +479,9 @@ func (srv *ProvisioningSrv) RoutePutAlertRuleGroup(c *contextmodel.ReqContext, a
 	}
 	provenance := determineProvenance(c)
 	err = srv.alertRules.ReplaceRuleGroup(c.Req.Context(), c.SignedInUser.GetOrgID(), groupModel, c.UserID, alerting_models.Provenance(provenance))
+	if errors.Is(err, alerting_models.ErrAlertRuleUniqueConstraintViolation) {
+		return ErrResp(http.StatusBadRequest, err, "")
+	}
 	if errors.Is(err, alerting_models.ErrAlertRuleFailedValidation) {
 		return ErrResp(http.StatusBadRequest, err, "")
 	}