diff --git a/backend/routes/ivantiFpWorkflow.js b/backend/routes/ivantiFpWorkflow.js
index fac0fd6..6e13841 100644
--- a/backend/routes/ivantiFpWorkflow.js
+++ b/backend/routes/ivantiFpWorkflow.js
@@ -76,6 +76,7 @@ function validateFpWorkflowForm(body) {
 /**
  * Builds the subjectFilterRequest JSON for the Ivanti FP workflow endpoint.
  * This is a stringified filter that tells Ivanti which host findings to include.
+ * Format matches the search endpoint filter schema: { filters, projection, sort }
  */
 function buildSubjectFilterRequest(findingIds) {
     return JSON.stringify({
@@ -83,11 +84,10 @@ function buildSubjectFilterRequest(findingIds) {
             field: 'id',
             exclusive: false,
             operator: 'IN',
-            orWithPrevious: false,
-            implicitFilters: [],
             value: findingIds.map(id => String(id)).join(',')
         }],
-        subject: 'hostFinding'
+        projection: 'internal',
+        sort: [{ field: 'id', direction: 'ASC' }]
     });
 }