# add_fixed_constraint_rassembly ## API Definition ```python def add_fixed_constraint_rassembly(assembly: Assembly, constraint_id: str, connector_a: ConnectorRef, connector_b: ConnectorRef, name: Optional[str] = None) -> Assembly ``` *Source: operations.py* ## Import Surface - top-level: `from simplecadapi import add_fixed_constraint_rassembly` ## Description Constrain two component connectors to the same frame.