diff --git a/src/components/Discover/Conformance/ConformanceSidebar.vue b/src/components/Discover/Conformance/ConformanceSidebar.vue
index 745c120..7a8d217 100644
--- a/src/components/Discover/Conformance/ConformanceSidebar.vue
+++ b/src/components/Discover/Conformance/ConformanceSidebar.vue
@@ -423,7 +423,7 @@ export default {
         case 'Activity sequence': // Rule Type 選 Activity sequence 的行為
           switch (this.selectedActivitySequence) {
             case 'Start & End': // Activity Sequence 選 Start & End 的行為
-              if(this.selectCfmSeqStart === null || this.selectCfmSeqEnd === null) return this.$toast.error('Both Start and End must be selected.');
+              if(this.selectCfmSeqStart === null || this.selectCfmSeqEnd === null) return this.$toast.error('Start and End activity must be selected.');
               else {
                 data = {
                   type: 'start-end',
@@ -535,7 +535,7 @@ export default {
                   }
                   break;
                 case 'Start & End':
-                  if(!this.selectCfmPtEteSEStart || !this.selectCfmPtEteSEEnd) return this.$toast.error('Both Start and End must be selected.');
+                  if(!this.selectCfmPtEteSEStart || !this.selectCfmPtEteSEEnd) return this.$toast.error('Start and End activity must be selected.');
                   else {
                     data = {
                       start: this.selectCfmPtEteSEStart,
@@ -664,7 +664,7 @@ export default {
                   }
                   break;
                 case 'Start & End':
-                  if(!this.selectCfmWtEteSEStart || !this.selectCfmWtEteSEEnd) return this.$toast.error('Both Start and End must be selected.');
+                  if(!this.selectCfmWtEteSEStart || !this.selectCfmWtEteSEEnd) return this.$toast.error('Start and End activity must be selected.');
                   else {
                     data = {
                       start: this.selectCfmWtEteSEStart,
@@ -789,7 +789,7 @@ export default {
               }
               break;
             case 'Start & End':
-              if(!this.selectCfmCtEteSEStart || !this.selectCfmCtEteSEEnd) return this.$toast.error('Both Start and End must be selected.');
+              if(!this.selectCfmCtEteSEStart || !this.selectCfmCtEteSEEnd) return this.$toast.error('Start and End activity must be selected.');
               else {
                 data = {
                   start: this.selectCfmCtEteSEStart,