diff --git a/resources/bedrock-agentalias.go b/resources/bedrock-agentalias.go
index 5607e61c4..0ec47cb87 100644
--- a/resources/bedrock-agentalias.go
+++ b/resources/bedrock-agentalias.go
@@ -1,6 +1,9 @@
 package resources
 
 import (
+	"fmt"
+	"strings"
+
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/bedrockagent"
@@ -82,6 +85,13 @@ func ListBedrockAgentIds(svc *bedrockagent.BedrockAgent) ([]string, error) {
 	return agentIds, nil
 }
 
+func (f *BedrockAgentAlias) Filter() error {
+	if strings.HasPrefix(*f.AgentAliasName, "AgentTestAlias") {
+		return fmt.Errorf("cannot delete AWS managed Agent Alias")
+	}
+	return nil
+}
+
 func (f *BedrockAgentAlias) Remove() error {
 	_, err := f.svc.DeleteAgentAlias(&bedrockagent.DeleteAgentAliasInput{
 		AgentAliasId: f.AgentAliasId,
diff --git a/resources/bedrock-flowalias.go b/resources/bedrock-flowalias.go
index e0914143a..196235008 100644
--- a/resources/bedrock-flowalias.go
+++ b/resources/bedrock-flowalias.go
@@ -1,6 +1,9 @@
 package resources
 
 import (
+	"fmt"
+	"strings"
+
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/bedrockagent"
@@ -82,6 +85,13 @@ func ListBedrockFlowIds(svc *bedrockagent.BedrockAgent) ([]string, error) {
 	return flowIds, nil
 }
 
+func (f *BedrockFlowAlias) Filter() error {
+	if strings.HasPrefix(*f.FlowAliasName, "TSTALIASID") {
+		return fmt.Errorf("cannot delete AWS managed Flow Alias")
+	}
+	return nil
+}
+
 func (f *BedrockFlowAlias) Remove() error {
 	_, err := f.svc.DeleteFlowAlias(&bedrockagent.DeleteFlowAliasInput{
 		AliasIdentifier: f.FlowAliasId,