restore custom_id validation

pinzon · pinzon · commit 299e448cef36 · 2024-12-17T14:23:09.000-05:00
diff --git a/localstack-core/localstack/services/ec2/patches.py b/localstack-core/localstack/services/ec2/patches.py
@@ -5,6 +5,7 @@
 from moto.utilities.id_generator import TAG_KEY_CUSTOM_ID, Tags
 
 from localstack.services.ec2.exceptions import (
+    InvalidSecurityGroupDuplicateCustomIdError,
     InvalidSubnetDuplicateCustomIdError,
     InvalidVpcDuplicateCustomIdError,
 )
@@ -120,6 +121,9 @@ def ec2_create_security_group(
         tags: dict[str, str] = tags or {}
         custom_id = tags.get(TAG_KEY_CUSTOM_ID)
 
+        if self.get_security_group_from_id(custom_id):
+            raise InvalidSecurityGroupDuplicateCustomIdError(custom_id)
+
         # Generate security group with moto library
         result: ec2_models.security_groups.SecurityGroup = fn(
             self, *args, tags=tags, force=force, **kwargs
