diff --git a/metricflow/dataflow/dataflow_plan.py b/metricflow/dataflow/dataflow_plan.py
index e324fdd4bb..b986d7b8f6 100644
--- a/metricflow/dataflow/dataflow_plan.py
+++ b/metricflow/dataflow/dataflow_plan.py
@@ -26,6 +26,7 @@
     from metricflow.dataflow.nodes.join_conversion_events import JoinConversionEventsNode
     from metricflow.dataflow.nodes.join_over_time import JoinOverTimeRangeNode
     from metricflow.dataflow.nodes.join_to_base import JoinOnEntitiesNode
+    from metricflow.dataflow.nodes.join_to_custom_granularity import JoinToCustomGranularityNode
     from metricflow.dataflow.nodes.join_to_time_spine import JoinToTimeSpineNode
     from metricflow.dataflow.nodes.metric_time_transform import MetricTimeDimensionTransformNode
     from metricflow.dataflow.nodes.min_max import MinMaxNode
@@ -187,6 +188,10 @@ def visit_add_generated_uuid_column_node(self, node: AddGeneratedUuidColumnNode)
     def visit_join_conversion_events_node(self, node: JoinConversionEventsNode) -> VisitorOutputT:  # noqa: D102
         pass
 
+    @abstractmethod
+    def visit_join_to_custom_granularity_node(self, node: JoinToCustomGranularityNode) -> VisitorOutputT:  # noqa: D102
+        pass
+
 
 class DataflowPlan(MetricFlowDag[DataflowPlanNode]):
     """Describes the flow of metric data as it goes from source nodes to sink nodes in the graph."""
diff --git a/metricflow/dataflow/optimizer/predicate_pushdown_optimizer.py b/metricflow/dataflow/optimizer/predicate_pushdown_optimizer.py
index 93ae2e1958..4fcf4666e7 100644
--- a/metricflow/dataflow/optimizer/predicate_pushdown_optimizer.py
+++ b/metricflow/dataflow/optimizer/predicate_pushdown_optimizer.py
@@ -25,6 +25,7 @@
 from metricflow.dataflow.nodes.join_conversion_events import JoinConversionEventsNode
 from metricflow.dataflow.nodes.join_over_time import JoinOverTimeRangeNode
 from metricflow.dataflow.nodes.join_to_base import JoinOnEntitiesNode
+from metricflow.dataflow.nodes.join_to_custom_granularity import JoinToCustomGranularityNode
 from metricflow.dataflow.nodes.join_to_time_spine import JoinToTimeSpineNode
 from metricflow.dataflow.nodes.metric_time_transform import MetricTimeDimensionTransformNode
 from metricflow.dataflow.nodes.min_max import MinMaxNode
@@ -458,6 +459,12 @@ def visit_join_conversion_events_node(self, node: JoinConversionEventsNode) -> O
             )
         )
 
+    def visit_join_to_custom_granularity_node(  # noqa: D102
+        self, node: JoinToCustomGranularityNode
+    ) -> OptimizeBranchResult:
+        self._log_visit_node_type(node)
+        return self._default_handler(node)
+
     def visit_join_on_entities_node(self, node: JoinOnEntitiesNode) -> OptimizeBranchResult:
         """Handles pushdown state propagation for the standard join node type.
 
diff --git a/metricflow/dataflow/optimizer/source_scan/cm_branch_combiner.py b/metricflow/dataflow/optimizer/source_scan/cm_branch_combiner.py
index 1882898860..4e786e8f48 100644
--- a/metricflow/dataflow/optimizer/source_scan/cm_branch_combiner.py
+++ b/metricflow/dataflow/optimizer/source_scan/cm_branch_combiner.py
@@ -19,6 +19,7 @@
 from metricflow.dataflow.nodes.join_conversion_events import JoinConversionEventsNode
 from metricflow.dataflow.nodes.join_over_time import JoinOverTimeRangeNode
 from metricflow.dataflow.nodes.join_to_base import JoinOnEntitiesNode
+from metricflow.dataflow.nodes.join_to_custom_granularity import JoinToCustomGranularityNode
 from metricflow.dataflow.nodes.join_to_time_spine import JoinToTimeSpineNode
 from metricflow.dataflow.nodes.metric_time_transform import MetricTimeDimensionTransformNode
 from metricflow.dataflow.nodes.min_max import MinMaxNode
@@ -450,6 +451,12 @@ def visit_join_conversion_events_node(  # noqa: D102
         self._log_visit_node_type(node)
         return self._default_handler(node)
 
+    def visit_join_to_custom_granularity_node(  # noqa: D102
+        self, node: JoinToCustomGranularityNode
+    ) -> ComputeMetricsBranchCombinerResult:
+        self._log_visit_node_type(node)
+        return self._default_handler(node)
+
     def visit_min_max_node(self, node: MinMaxNode) -> ComputeMetricsBranchCombinerResult:  # noqa: D102
         self._log_visit_node_type(node)
         return self._default_handler(node)
diff --git a/metricflow/dataflow/optimizer/source_scan/source_scan_optimizer.py b/metricflow/dataflow/optimizer/source_scan/source_scan_optimizer.py
index 5fa9fc4602..016da5d0cc 100644
--- a/metricflow/dataflow/optimizer/source_scan/source_scan_optimizer.py
+++ b/metricflow/dataflow/optimizer/source_scan/source_scan_optimizer.py
@@ -21,6 +21,7 @@
 from metricflow.dataflow.nodes.join_conversion_events import JoinConversionEventsNode
 from metricflow.dataflow.nodes.join_over_time import JoinOverTimeRangeNode
 from metricflow.dataflow.nodes.join_to_base import JoinOnEntitiesNode
+from metricflow.dataflow.nodes.join_to_custom_granularity import JoinToCustomGranularityNode
 from metricflow.dataflow.nodes.join_to_time_spine import JoinToTimeSpineNode
 from metricflow.dataflow.nodes.metric_time_transform import MetricTimeDimensionTransformNode
 from metricflow.dataflow.nodes.min_max import MinMaxNode
@@ -315,6 +316,12 @@ def visit_join_conversion_events_node(self, node: JoinConversionEventsNode) -> O
         self._log_visit_node_type(node)
         return self._default_base_output_handler(node)
 
+    def visit_join_to_custom_granularity_node(  # noqa: D102
+        self, node: JoinToCustomGranularityNode
+    ) -> OptimizeBranchResult:
+        self._log_visit_node_type(node)
+        return self._default_base_output_handler(node)
+
     def visit_min_max_node(self, node: MinMaxNode) -> OptimizeBranchResult:  # noqa: D102
         self._log_visit_node_type(node)
         return self._default_base_output_handler(node)
diff --git a/metricflow/execution/dataflow_to_execution.py b/metricflow/execution/dataflow_to_execution.py
index 4df6cc0f21..8f2bb1de80 100644
--- a/metricflow/execution/dataflow_to_execution.py
+++ b/metricflow/execution/dataflow_to_execution.py
@@ -18,6 +18,7 @@
 from metricflow.dataflow.nodes.join_conversion_events import JoinConversionEventsNode
 from metricflow.dataflow.nodes.join_over_time import JoinOverTimeRangeNode
 from metricflow.dataflow.nodes.join_to_base import JoinOnEntitiesNode
+from metricflow.dataflow.nodes.join_to_custom_granularity import JoinToCustomGranularityNode
 from metricflow.dataflow.nodes.join_to_time_spine import JoinToTimeSpineNode
 from metricflow.dataflow.nodes.metric_time_transform import MetricTimeDimensionTransformNode
 from metricflow.dataflow.nodes.min_max import MinMaxNode
@@ -189,3 +190,7 @@ def visit_add_generated_uuid_column_node(self, node: AddGeneratedUuidColumnNode)
     @override
     def visit_join_conversion_events_node(self, node: JoinConversionEventsNode) -> ConvertToExecutionPlanResult:
         raise NotImplementedError
+
+    @override
+    def visit_join_to_custom_granularity_node(self, node: JoinToCustomGranularityNode) -> ConvertToExecutionPlanResult:
+        raise NotImplementedError
diff --git a/metricflow/plan_conversion/dataflow_to_sql.py b/metricflow/plan_conversion/dataflow_to_sql.py
index 79c72fee2b..7b168c4f0c 100644
--- a/metricflow/plan_conversion/dataflow_to_sql.py
+++ b/metricflow/plan_conversion/dataflow_to_sql.py
@@ -55,6 +55,7 @@
 from metricflow.dataflow.nodes.join_conversion_events import JoinConversionEventsNode
 from metricflow.dataflow.nodes.join_over_time import JoinOverTimeRangeNode
 from metricflow.dataflow.nodes.join_to_base import JoinOnEntitiesNode
+from metricflow.dataflow.nodes.join_to_custom_granularity import JoinToCustomGranularityNode
 from metricflow.dataflow.nodes.join_to_time_spine import JoinToTimeSpineNode
 from metricflow.dataflow.nodes.metric_time_transform import MetricTimeDimensionTransformNode
 from metricflow.dataflow.nodes.min_max import MinMaxNode
@@ -1435,6 +1436,9 @@ def visit_join_to_time_spine_node(self, node: JoinToTimeSpineNode) -> SqlDataSet
             ),
         )
 
+    def visit_join_to_custom_granularity_node(self, node: JoinToCustomGranularityNode) -> SqlDataSet:  # noqa: D102
+        raise NotImplementedError  # TODO in later commit
+
     def visit_min_max_node(self, node: MinMaxNode) -> SqlDataSet:  # noqa: D102
         parent_data_set = node.parent_node.accept(self)
         parent_table_alias = self._next_unique_table_alias()
diff --git a/tests_metricflow/dataflow/optimizer/source_scan/test_source_scan_optimizer.py b/tests_metricflow/dataflow/optimizer/source_scan/test_source_scan_optimizer.py
index c8cbb851c6..974e9a1ef3 100644
--- a/tests_metricflow/dataflow/optimizer/source_scan/test_source_scan_optimizer.py
+++ b/tests_metricflow/dataflow/optimizer/source_scan/test_source_scan_optimizer.py
@@ -30,6 +30,7 @@
 from metricflow.dataflow.nodes.join_conversion_events import JoinConversionEventsNode
 from metricflow.dataflow.nodes.join_over_time import JoinOverTimeRangeNode
 from metricflow.dataflow.nodes.join_to_base import JoinOnEntitiesNode
+from metricflow.dataflow.nodes.join_to_custom_granularity import JoinToCustomGranularityNode
 from metricflow.dataflow.nodes.join_to_time_spine import JoinToTimeSpineNode
 from metricflow.dataflow.nodes.metric_time_transform import MetricTimeDimensionTransformNode
 from metricflow.dataflow.nodes.min_max import MinMaxNode
@@ -110,6 +111,9 @@ def visit_add_generated_uuid_column_node(self, node: AddGeneratedUuidColumnNode)
     def visit_join_conversion_events_node(self, node: JoinConversionEventsNode) -> int:  # noqa: D102
         return self._sum_parents(node)
 
+    def visit_join_to_custom_granularity_node(self, node: JoinToCustomGranularityNode) -> int:  # noqa: D102
+        return self._sum_parents(node)
+
     def count_source_nodes(self, dataflow_plan: DataflowPlan) -> int:  # noqa: D102
         return dataflow_plan.sink_node.accept(self)