diff --git a/pages/api/questionnaire/send.js b/pages/api/questionnaire/send.js
index 5ba5a94..7ec8951 100644
--- a/pages/api/questionnaire/send.js
+++ b/pages/api/questionnaire/send.js
@@ -202,6 +202,8 @@ export default async function handler(req, res)
 						payload.signatory_person.assignment_date = checkNullEmpty(payload.signatory_person.assignment_date) ? moment(payload.signatory_person.assignment_date).format("YYYY-MM-DD") : null;
 						payload.signatory_person.credentials_dateend = checkNullEmpty(payload.signatory_person.credentials_dateend) ? moment(payload.signatory_person.credentials_dateend).format("YYYY-MM-DD") : null;
 						*/
+						payload.signatory_person.assignment_date = null;
+						payload.signatory_person.credentials_dateend = null;
 
 						payload.signatory_person.birthdate = checkNullEmpty(payload.signatory_person.birthdate) ? moment(payload.signatory_person.birthdate).format("YYYY-MM-DD") : null;