diff --git a/apps/spreadsheeteditor/main/app/controller/Main.js b/apps/spreadsheeteditor/main/app/controller/Main.js
index 8655a8abf..e874bb100 100644
--- a/apps/spreadsheeteditor/main/app/controller/Main.js
+++ b/apps/spreadsheeteditor/main/app/controller/Main.js
@@ -1692,6 +1692,10 @@ define([
                         config.msg = this.errorPivotWithoutUnderlying;
                         break;
 
+                    case Asc.c_oAscError.ID.ChangeOnProtectedSheet:
+                        config.msg = this.errorChangeOnProtectedSheet;
+                        break;
+
                     default:
                         config.msg = (typeof id == 'string') ? id : this.errorDefaultMessage.replace('%1', id);
                         break;
@@ -2952,7 +2956,8 @@ define([
             errorPivotWithoutUnderlying: 'The Pivot Table report was saved without the underlying data.<br>Use the \'Refresh\' button to update the report.',
             txtQuarter: 'Qtr',
             txtOr: '%1 or %2',
-            confirmReplaceFormulaInTable: 'Formulas in the header row will be removed and converted to static text.<br>Do you want to continue?'
+            confirmReplaceFormulaInTable: 'Formulas in the header row will be removed and converted to static text.<br>Do you want to continue?',
+            errorChangeOnProtectedSheet: 'The cell or chart you are trying to change is on a protected sheet.<br>To make a change, unprotect the sheet. You might be requested to enter a password.'
         }
     })(), SSE.Controllers.Main || {}))
 });
diff --git a/apps/spreadsheeteditor/mobile/locale/en.json b/apps/spreadsheeteditor/mobile/locale/en.json
index afedbcdc0..5a1bb9c8c 100644
--- a/apps/spreadsheeteditor/mobile/locale/en.json
+++ b/apps/spreadsheeteditor/mobile/locale/en.json
@@ -164,7 +164,8 @@
         "errorFrmlMaxTextLength": "Text values in formulas are limited to 255 characters.<br>Use the CONCATENATE function or concatenation operator (&)",
         "errorFrmlMaxLength": "You cannot add this formula as its length exceeded the allowed number of characters.<br>Please edit it and try again.",
         "errorFrmlMaxReference": "You cannot enter this formula because it has too many values,<br>cell references, and/or names.",
-        "errorDataValidate":"The value you entered is not valid.<br>A user has restricted values that can be entered into this cell."
+        "errorDataValidate":"The value you entered is not valid.<br>A user has restricted values that can be entered into this cell.",
+        "errorChangeOnProtectedSheet": "The cell or chart you are trying to change is on a protected sheet.<br>To make a change, unprotect the sheet."
     },
     "ContextMenu": {
         "menuViewComment": "View Comment",
diff --git a/apps/spreadsheeteditor/mobile/src/controller/Error.jsx b/apps/spreadsheeteditor/mobile/src/controller/Error.jsx
index 340da6739..484e6ef1a 100644
--- a/apps/spreadsheeteditor/mobile/src/controller/Error.jsx
+++ b/apps/spreadsheeteditor/mobile/src/controller/Error.jsx
@@ -298,6 +298,10 @@ const ErrorController = inject('storeAppOptions')(({storeAppOptions, LoadingDocu
             case Asc.c_oAscError.ID.UpdateVersion:
                 config.msg = _t.errorUpdateVersionOnDisconnect;
                 break;
+            
+            case Asc.c_oAscError.ID.ChangeOnProtectedSheet:
+                config.msg = _t.errorChangeOnProtectedSheet;
+                break;
 
             default:
                 config.msg = _t.errorDefaultMessage.replace('%1', id);