Update physical_flows.md
@@ -15,3 +15,15 @@ The physical flow data model is comprised of several parts:
- `physical_specifications` - describe at a high level what is in the flow
- `physical_spec_defn` (`_field` / `_sample_file`) - describe the format of the data being transferred
- `physical_spec_data_type` - describes the data types of the information transferred
+
+
+ ## Uniqueness of physical flows
+
+ Waltz currently considers the following set of attributes when determining if a physical flow is a duplicate:
+
+- Physical Specification Id
+- Physical Flow basis offset
+- Physical Flow frequency
+- Physical Flow transport
+- Logical flow id
+
