Sitewise: Custom component models failing

[trevransom]

Describe the bug

When trying to implement a custom component model in the AWS CDK for Sitewise in Python it gives the error "Custom composite model must have either id, externalId, or path"

Expected Behavior

That it would work directly

Current Behavior

Gives the error "Custom composite model must have either id, externalId, or path"

Reproduction Steps

class equipmentUnitModel(Construct):
    def __init__(self, scope: Construct, id: str, model_id: str, **kwargs) -> None:
        super().__init__(scope, id, **kwargs)
        [self.my](http://self.my/)_sitewise_model = sitewise.CfnAssetModel(
            self,
            "equipment_unit_model",
            asset_model_name="equipment_unit_model",
            asset_model_description="equipment unit model",
            asset_model_composite_models=[
                sitewise.CfnAssetModel.AssetModelCompositeModelProperty(
                    name="demo",
                    type="CUSTOM"
                ),
            ]
        )

Possible Solution

No response

Additional Information/Context

No response

CDK CLI Version

2.131.0 (build 92b912d)

Framework Version

No response

Node.js Version

v21.6.2

OS

Mac

Language

Python

Language Version

No response

Other information

No response

[pahud]

Gives the error "Custom composite model must have either id, externalId, or path"

This seems to be a cloudformation error? Can you share the cdk synth output of the AWS::IoTSiteWise::AssetModel resource? Looks like some property is required but missing. This doesn't seem to be a CDK bug we just need to figure out what was missing though.