diff --git a/azurerm/internal/services/sentinel/sentinel_alert_rule_scheduled_resource.go b/azurerm/internal/services/sentinel/sentinel_alert_rule_scheduled_resource.go
index <HASH>..<HASH> 100644
--- a/azurerm/internal/services/sentinel/sentinel_alert_rule_scheduled_resource.go
+++ b/azurerm/internal/services/sentinel/sentinel_alert_rule_scheduled_resource.go
@@ -205,7 +205,7 @@ func resourceSentinelAlertRuleScheduled() *pluginsdk.Resource {
 				Type:         pluginsdk.TypeString,
 				Optional:     true,
 				Default:      "PT5H",
-				ValidateFunc: validate.ISO8601DurationBetween("PT5M", "PT24H"),
+				ValidateFunc: validate.ISO8601DurationBetween("PT5M", "P14D"),
 			},
 
 			"query_period": {
"azurerm_sentinel_alert_rule_scheduled" - Fix query frequency validation (#<I>)

Azure Sentinel have recently expand the query_frequency parameter to support up to fourteen days rather than a <I> hours. Quick bugfix reflects this.



Resolves #<I>



Self tested and validated. Can add a test specifically for this if required.