diff --git a/src/services/ProcessorService.js b/src/services/ProcessorService.js
index 8f26a89..d6fa186 100755
--- a/src/services/ProcessorService.js
+++ b/src/services/ProcessorService.js
@@ -96,8 +96,8 @@ async function _updateChallengeResource (message, isDelete) {
       logger.debug(`v4 Unregistering Submitter ${config.CHALLENGE_API_V4_URL}/${_.get(v5Challenge, 'legacyId')}/unregister?userId=${userId} - ${JSON.stringify(body)}`)
       await helper.postRequest(`${config.CHALLENGE_API_V4_URL}/${_.get(v5Challenge, 'legacyId')}/unregister?userId=${userId}`, {}, m2mToken)
     } else {
-      logger.debug(`v4 Registering Submitter ${config.CHALLENGE_API_V4_URL}/${_.get(v5Challenge, 'legacyId')}/register?userId=${userId} - ${JSON.stringify(body)}`)
-      await helper.postRequest(`${config.CHALLENGE_API_V4_URL}/${_.get(v5Challenge, 'legacyId')}/register?userId=${userId}`, {}, m2mToken)
+      logger.debug(`v4 Registering Submitter ${config.CHALLENGE_API_V4_URL}/${_.get(v5Challenge, 'legacyId')}/register?userId=${userId}&v5ChallengeId=${challengeId} - ${JSON.stringify(body)}`)
+      await helper.postRequest(`${config.CHALLENGE_API_V4_URL}/${_.get(v5Challenge, 'legacyId')}/register?userId=${userId}&v5ChallengeId=${challengeId}`, {}, m2mToken)
     }
   } else {
     if (isDelete) {