diff --git a/.changelog/3499.txt b/.changelog/3499.txt
new file mode 100644
index 0000000000..78ec64c290
--- /dev/null
+++ b/.changelog/3499.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+compute: fixed error where plan would error if `google_compute_region_disk_resource_policy_attachment` had been deleted outside of terraform.
+```
diff --git a/google-beta/resource_access_context_manager_service_perimeter_resource.go b/google-beta/resource_access_context_manager_service_perimeter_resource.go
index 898bbd2277..bd1a1d7df7 100644
--- a/google-beta/resource_access_context_manager_service_perimeter_resource.go
+++ b/google-beta/resource_access_context_manager_service_perimeter_resource.go
@@ -252,9 +252,7 @@ func flattenNestedAccessContextManagerServicePerimeterResource(d *schema.Resourc
 
 	v, ok = res["resources"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_big_query_dataset_access.go b/google-beta/resource_big_query_dataset_access.go
index c572574099..ceff3d8b90 100644
--- a/google-beta/resource_big_query_dataset_access.go
+++ b/google-beta/resource_big_query_dataset_access.go
@@ -491,9 +491,7 @@ func flattenNestedBigQueryDatasetAccess(d *schema.ResourceData, meta interface{}
 
 	v, ok = res["access"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_backend_bucket_signed_url_key.go b/google-beta/resource_compute_backend_bucket_signed_url_key.go
index 592e0758c9..052ddfba91 100644
--- a/google-beta/resource_compute_backend_bucket_signed_url_key.go
+++ b/google-beta/resource_compute_backend_bucket_signed_url_key.go
@@ -246,9 +246,7 @@ func flattenNestedComputeBackendBucketSignedUrlKey(d *schema.ResourceData, meta
 
 	v, ok = res["signedUrlKeyNames"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_backend_service_signed_url_key.go b/google-beta/resource_compute_backend_service_signed_url_key.go
index 9638ed87b9..5e08363029 100644
--- a/google-beta/resource_compute_backend_service_signed_url_key.go
+++ b/google-beta/resource_compute_backend_service_signed_url_key.go
@@ -246,9 +246,7 @@ func flattenNestedComputeBackendServiceSignedUrlKey(d *schema.ResourceData, meta
 
 	v, ok = res["signedUrlKeyNames"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_disk_resource_policy_attachment.go b/google-beta/resource_compute_disk_resource_policy_attachment.go
index d0cd14d5ad..c3c387cd02 100644
--- a/google-beta/resource_compute_disk_resource_policy_attachment.go
+++ b/google-beta/resource_compute_disk_resource_policy_attachment.go
@@ -296,9 +296,7 @@ func flattenNestedComputeDiskResourcePolicyAttachment(d *schema.ResourceData, me
 
 	v, ok = res["resourcePolicies"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_global_network_endpoint.go b/google-beta/resource_compute_global_network_endpoint.go
index 8fd69c67d3..94b90b2961 100644
--- a/google-beta/resource_compute_global_network_endpoint.go
+++ b/google-beta/resource_compute_global_network_endpoint.go
@@ -339,9 +339,7 @@ func flattenNestedComputeGlobalNetworkEndpoint(d *schema.ResourceData, meta inte
 
 	v, ok = res["items"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_instance_group_named_port.go b/google-beta/resource_compute_instance_group_named_port.go
index 1ff44e74e8..1edf750f61 100644
--- a/google-beta/resource_compute_instance_group_named_port.go
+++ b/google-beta/resource_compute_instance_group_named_port.go
@@ -308,9 +308,7 @@ func flattenNestedComputeInstanceGroupNamedPort(d *schema.ResourceData, meta int
 
 	v, ok = res["namedPorts"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_network_endpoint.go b/google-beta/resource_compute_network_endpoint.go
index bc8431e30b..a2521c7425 100644
--- a/google-beta/resource_compute_network_endpoint.go
+++ b/google-beta/resource_compute_network_endpoint.go
@@ -347,9 +347,7 @@ func flattenNestedComputeNetworkEndpoint(d *schema.ResourceData, meta interface{
 
 	v, ok = res["items"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_network_peering_routes_config.go b/google-beta/resource_compute_network_peering_routes_config.go
index f35ac6fe93..b96697eda5 100644
--- a/google-beta/resource_compute_network_peering_routes_config.go
+++ b/google-beta/resource_compute_network_peering_routes_config.go
@@ -320,9 +320,7 @@ func flattenNestedComputeNetworkPeeringRoutesConfig(d *schema.ResourceData, meta
 
 	v, ok = res["peerings"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_per_instance_config.go b/google-beta/resource_compute_per_instance_config.go
index 2bf2b291e0..b2d692bbb5 100644
--- a/google-beta/resource_compute_per_instance_config.go
+++ b/google-beta/resource_compute_per_instance_config.go
@@ -559,9 +559,7 @@ func flattenNestedComputePerInstanceConfig(d *schema.ResourceData, meta interfac
 
 	v, ok = res["items"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_region_disk_resource_policy_attachment.go b/google-beta/resource_compute_region_disk_resource_policy_attachment.go
index 656657009a..43237e18e8 100644
--- a/google-beta/resource_compute_region_disk_resource_policy_attachment.go
+++ b/google-beta/resource_compute_region_disk_resource_policy_attachment.go
@@ -280,9 +280,7 @@ func flattenNestedComputeRegionDiskResourcePolicyAttachment(d *schema.ResourceDa
 
 	v, ok = res["resourcePolicies"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_region_per_instance_config.go b/google-beta/resource_compute_region_per_instance_config.go
index 6557499ef1..6ffff09b08 100644
--- a/google-beta/resource_compute_region_per_instance_config.go
+++ b/google-beta/resource_compute_region_per_instance_config.go
@@ -559,9 +559,7 @@ func flattenNestedComputeRegionPerInstanceConfig(d *schema.ResourceData, meta in
 
 	v, ok = res["items"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_router_bgp_peer.go b/google-beta/resource_compute_router_bgp_peer.go
index b2d0ccb948..15ad4b4088 100644
--- a/google-beta/resource_compute_router_bgp_peer.go
+++ b/google-beta/resource_compute_router_bgp_peer.go
@@ -638,9 +638,7 @@ func flattenNestedComputeRouterBgpPeer(d *schema.ResourceData, meta interface{},
 
 	v, ok = res["bgpPeers"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_compute_router_nat.go b/google-beta/resource_compute_router_nat.go
index e348658ec7..4f14e271d1 100644
--- a/google-beta/resource_compute_router_nat.go
+++ b/google-beta/resource_compute_router_nat.go
@@ -999,9 +999,7 @@ func flattenNestedComputeRouterNat(d *schema.ResourceData, meta interface{}, res
 
 	v, ok = res["nats"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_firebase_project_location.go b/google-beta/resource_firebase_project_location.go
index 92be7a2dd8..02c8d6702d 100644
--- a/google-beta/resource_firebase_project_location.go
+++ b/google-beta/resource_firebase_project_location.go
@@ -186,9 +186,7 @@ func flattenNestedFirebaseProjectLocation(d *schema.ResourceData, meta interface
 
 	v, ok = res["resources"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_resource_manager_lien.go b/google-beta/resource_resource_manager_lien.go
index 7b128f1dee..17fee8448e 100644
--- a/google-beta/resource_resource_manager_lien.go
+++ b/google-beta/resource_resource_manager_lien.go
@@ -317,9 +317,7 @@ func flattenNestedResourceManagerLien(d *schema.ResourceData, meta interface{},
 
 	v, ok = res["liens"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {
diff --git a/google-beta/resource_service_usage_consumer_quota_override.go b/google-beta/resource_service_usage_consumer_quota_override.go
index 2ea5eda0da..74243fdb8b 100644
--- a/google-beta/resource_service_usage_consumer_quota_override.go
+++ b/google-beta/resource_service_usage_consumer_quota_override.go
@@ -344,9 +344,7 @@ func flattenNestedServiceUsageConsumerQuotaOverride(d *schema.ResourceData, meta
 
 	v, ok = res["overrides"]
 	if !ok || v == nil {
-		// It's possible that there is only one of these resources and
-		// that res represents that resource.
-		v = res
+		return nil, nil
 	}
 
 	switch v.(type) {