diff --git a/internal/services/privatednsresolver/private_dns_resolver_inbound_endpoint_resource.go b/internal/services/privatednsresolver/private_dns_resolver_inbound_endpoint_resource.go
index 001b2714e125..41904c45a62e 100644
--- a/internal/services/privatednsresolver/private_dns_resolver_inbound_endpoint_resource.go
+++ b/internal/services/privatednsresolver/private_dns_resolver_inbound_endpoint_resource.go
@@ -83,12 +83,10 @@ func (r PrivateDNSResolverInboundEndpointResource) Arguments() map[string]*plugi
 					},
 
 					"private_ip_allocation_method": {
-						Type:     pluginsdk.TypeString,
-						Optional: true,
-						Default:  string(inboundendpoints.IPAllocationMethodDynamic),
-						ValidateFunc: validation.StringInSlice([]string{
-							string(inboundendpoints.IPAllocationMethodDynamic),
-						}, false),
+						Type:         pluginsdk.TypeString,
+						Optional:     true,
+						Default:      string(inboundendpoints.IPAllocationMethodDynamic),
+						ValidateFunc: validation.StringInSlice(inboundendpoints.PossibleValuesForIPAllocationMethod(), false),
 					},
 				},
 			},
diff --git a/website/docs/r/private_dns_resolver_inbound_endpoint.html.markdown b/website/docs/r/private_dns_resolver_inbound_endpoint.html.markdown
index dd29f02829f8..12a9c5834df6 100644
--- a/website/docs/r/private_dns_resolver_inbound_endpoint.html.markdown
+++ b/website/docs/r/private_dns_resolver_inbound_endpoint.html.markdown
@@ -79,7 +79,7 @@ The following arguments are supported:
 
 An `ip_configurations` block supports the following:
 
-* `private_ip_allocation_method` - (Optional) Private IP address allocation method. Allowed value is `Dynamic`. Defaults to `Dynamic`.
+* `private_ip_allocation_method` - (Optional) Private IP address allocation method. Allowed value is `Dynamic` and `Static`. Defaults to `Dynamic`.
 
 * `subnet_id` - (Required) The subnet ID of the IP configuration.