diff --git a/src/lib/connectors/system/charge-version-supplementary-billing.js b/src/lib/connectors/system/charge-version-supplementary-billing.js
index b9b3fc12e..86a8de856 100644
--- a/src/lib/connectors/system/charge-version-supplementary-billing.js
+++ b/src/lib/connectors/system/charge-version-supplementary-billing.js
@@ -7,12 +7,11 @@ const { serviceRequest } = require('@envage/water-abstraction-helpers')
  * Posts to system repo to flag new charge versions for SROC supplementary billing
  * @return {Promise}
  */
-const chargeVersionFlagSupplementaryBilling = (chargeVersionId, workflowId) => {
+const chargeVersionFlagSupplementaryBilling = (chargeVersionId) => {
   const url = `${config.services.system}/licences/supplementary`
   const options = {
     body: {
-      chargeVersionId,
-      workflowId
+      chargeVersionId
     }
   }
 
diff --git a/src/modules/charge-versions/services/charge-version-workflows.js b/src/modules/charge-versions/services/charge-version-workflows.js
index e815e2b69..8af6e529c 100644
--- a/src/modules/charge-versions/services/charge-version-workflows.js
+++ b/src/modules/charge-versions/services/charge-version-workflows.js
@@ -4,7 +4,9 @@ const bluebird = require('bluebird')
 
 // Services
 const service = require('../../../lib/services/service')
-const system = require('../../../lib/connectors/system/charge-version-supplementary-billing.js')
+const systemChargeVersionConnector = require('../../../lib/connectors/system/charge-version-supplementary-billing.js')
+const systemWorkflowConnector = require('../../../lib/connectors/system/workflow-supplementary-billing.js')
+
 const documentsService = require('../../../lib/services/documents-service')
 const chargeVersionService = require('../../../lib/services/charge-versions')
 
@@ -233,7 +235,8 @@ const approve = async (chargeVersionWorkflow, approvedBy) => {
     // Let the water-abstraction-system know a new charge version has been added. It will then determine if the licence
     // needs to be flagged for supplementary billing based on the new charge version and how long the licence was in
     // workflow
-    await system.chargeVersionFlagSupplementaryBilling(persistedChargeVersion.id, chargeVersionWorkflow.id)
+    await systemChargeVersionConnector.chargeVersionFlagSupplementaryBilling(persistedChargeVersion.id)
+    await systemWorkflowConnector.workflowFlagSupplementaryBilling(chargeVersionWorkflow.id)
   } catch (error) {
     logger.error('Flag supplementary request to system failed', error.stack)
   }