diff --git a/src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/api.js b/src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/api.js
index 0f71f7170..400efc8e4 100644
--- a/src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/api.js
+++ b/src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/api.js
@@ -21,15 +21,15 @@ let getAccompanyingCourse = (accompanying_period_id___) => { //tmp
 };
 
 /*
-* Endpoint chill_person_accompanying_course_api_add_participation, 
+* Endpoint v.2 chill_api_single_accompanying_course_participation, 
 * method POST/DELETE, add/close a participation to the accompanyingCourse
 *
-*  @accompanying_period_id integer - id of accompanyingCourse
-*  @person_id  integer - id of person
-*  @method     string - POST or DELETE
+*  @accompanying_period_id   integer - id of accompanyingCourse
+*  @person_id                integer - id of person
+*  @method                   string - POST or DELETE
 */
 let postParticipation = (accompanying_period_id, person_id, method) => {
-   const url = `/${locale}/person/api/1.0/accompanying-course/${accompanying_period_id}/participation.${format}`
+   const url = `/api/1.0/person/accompanying-course/${accompanying_period_id}/participation.${format}`
    return fetch(url, {
          method: method,
          headers: {
diff --git a/src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/store/index.js b/src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/store/index.js
index 69ff448b3..ab26379a6 100644
--- a/src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/store/index.js
+++ b/src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/store/index.js
@@ -28,8 +28,10 @@ let initPromise = getAccompanyingCourse(id)
             },
             closeParticipation(state, { participation, payload }) {
                //console.log('### mutation: close item', { participation, payload });
-               state.accompanyingCourse.participations = state.accompanyingCourse.participations.filter(participation => participation !== payload);
-               state.accompanyingCourse.participations.push(participation);
+               // find row position and replace by closed participation
+               state.accompanyingCourse.participations.splice(
+                  state.accompanyingCourse.participations.findIndex(element => element === payload), 1, participation
+               );
             },
             addParticipation(state, participation) {
                //console.log('### mutation: add participation', participation);
@@ -41,8 +43,8 @@ let initPromise = getAccompanyingCourse(id)
                commit('removeParticipation', payload);
             },
             closeParticipation({ commit }, payload) {
-               //console.log('## action: fetch delete participation: payload', payload.person.id);
-               postParticipation(id, payload.person.id, 'DELETE')
+               //console.log('## action: fetch delete participation: payload', payload.person.person_id);
+               postParticipation(id, payload.person.person_id, 'DELETE')
                   .then(participation => new Promise((resolve, reject) => {
                      commit('closeParticipation', { participation, payload });
                      resolve();