diff --git a/spiffworkflow-backend/src/spiffworkflow_backend/api.yml b/spiffworkflow-backend/src/spiffworkflow_backend/api.yml
index 068efa2f..1f3e7971 100755
--- a/spiffworkflow-backend/src/spiffworkflow_backend/api.yml
+++ b/spiffworkflow-backend/src/spiffworkflow_backend/api.yml
@@ -445,6 +445,12 @@ paths:
         description: For filtering - indicates the user has manually entered a query
         schema:
           type: boolean
+      - name: report_identifier
+        in: query
+        required: false
+        description: Specifies the identifier of a report to use, if any
+        schema:
+          type: string
     get:
       operationId: spiffworkflow_backend.routes.process_api_blueprint.process_instance_list
       summary: Returns a list of process instances for a given process model
diff --git a/spiffworkflow-backend/src/spiffworkflow_backend/routes/process_api_blueprint.py b/spiffworkflow-backend/src/spiffworkflow_backend/routes/process_api_blueprint.py
index b3d5ec02..deb34707 100644
--- a/spiffworkflow-backend/src/spiffworkflow_backend/routes/process_api_blueprint.py
+++ b/spiffworkflow-backend/src/spiffworkflow_backend/routes/process_api_blueprint.py
@@ -736,6 +736,7 @@ def process_instance_list(
     end_to: Optional[int] = None,
     process_status: Optional[str] = None,
     user_filter: Optional[bool] = False,
+    report_identifier: Optional[str] = None
 ) -> flask.wrappers.Response:
     """Process_instance_list."""
     process_instance_report = ProcessInstanceReportModel.default_report(g.user)