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Demos
Theme Builder
Docs
API
Community
Pricing
Github
Dark Mode
What's New
Getting Started
Quick Start
Guides
Tutorial: My First Grid
Video Tutorials
AG Grid Enterprise
Installing Your Licence Key
Build & Tooling
Modules
Testing
Compatibility
Security
Supported Browsers
Installation
Layout & Styling
Theming
Overview
Built-in Themes
Theme Parameters
Theme Parts
Colors & Dark Mode
Fonts
Borders
Compactness & Row Height
Selections
Headers
Icons
Tool Panels
Inputs & Widgets
Menus & Popups
Extending with CSS
Distributing Shared Themes
Migration from v32
Legacy Themes
Design System
Grid Layout
Charting
Sparklines
Install Sparklines
Overview
Area
Bar
Column
Line
Sparkline Data
Axis Types
Tooltips
Points of Interest
Sparklines API
Area
Bar / Column
Line
Integrated Charts
Overview
Install Integrated Charts
User Created Charts
Range Chart
Pivot Chart
Application Created Charts
Range Chart API
Pivot Chart API
Cross Filter API
Chart Types
Chart Menu
Chart Tool Panels
Chart Container
Customisation
Chart Events
Time Series
Save / Restore Charts
Chart Image Export
Standalone Charts
See AG Charts
Core Features
Columns
Configuration
Column Definitions
Updating Definitions
Column State
Column Headers
Column Groups
Column Sizing
Column Moving
Column Pinning
Column Spanning
Rows
Row Data
Row Sorting
Row Spanning
Row Pinning
Row Height
Styling Rows
Row Pagination
Accessing Rows
Row Dragging
External DropZone
Grid to Grid
Full Width Rows
Cells
Cell Content
Getting Values
Text Formatting
Cell Components
Cell Data Types
Styling Cells
Highlighting Changes
Tooltips
Expressions
View Refresh
Reference Data
Cell Text Selection
Filtering
Overview
Column Filters
Text Filter
Number Filter
Date Filter
Set Filter
Filter List
Data Updates
Tree List
Mini Filter
Excel Mode
API
Multi Filter
Filter Conditions
Applying Filters
Filter API
Custom Column Filters
Floating Filters
Custom Floating Filters
Advanced Filter
External Filter
Quick Filter
Selection
Row Selection
Single Row Selection
Multi-Row Selection
API Reference
Cell Selection
Range Handle
Fill Handle
API Reference
Editing
Overview
Start / Stop Editing
Parsing Values
Saving Values
Edit Components
Provided Cell Editors
Text Editor
Large Text Editor
Select Editor
Rich Select Editor
Number Editor
Date Editors
Checkbox Editor
Undo / Redo Edits
Full Row
Updating Data
Row Data
Single Row / Cell
Transactions
High Frequency
Interactivity
Keyboard Navigation
Touch
Accessibility (ARIA)
RTL Text Direction
Localisation
Advanced Features
Row Grouping
Overview
Grouping Data
Group Display Types
Single Column
Multiple Columns
Group Rows
Row Group Panel
Expanding Groups
Hierarchy Selection
Sorting
Aggregation
Overview
Configure Columns
Custom Functions
Total Rows
Filtering
Pivoting
Overview
Pivot Result Columns
Pivot Column Groups
Pivot Totals
Tree Data
Overview
Row Hierarchy
Group Column
Expanding Groups
Tree Selection
Filtering
Master Detail
Overview
Detail Grids
Detail Height
Detail Refresh
Master Rows
Nesting
Custom Detail
Other
Accessories
Tool Panels
Side Bar
Columns Tool Panel
Filters Tool Panel
Custom Panel
Column Menu
Context Menu
Menu Item Component
Status Bar
Overlays
Server-Side Data
Row Models
Server-Side Row Model
API Reference
Datasource
Configuration
Sorting
Filtering
Row Grouping
Pivoting
Pagination
Row Selection
Loading Component
Changing Columns
Updating Data
Refresh
Single Row Updates
Transactions
Load Retry
Row Height
Master Detail
Tree Data
Example Node.js & MySQL
Example GraphQL & MySQL
Example Java & Oracle
Example Java & Apache
Infinite Row Model
Viewport Row Model
Import & Export
CSV Export
Excel Export
API Reference
Styles
Formulas
Extra Content
Customising Content
Images
Excel Tables
Multiple Sheets
Rows
Columns
Freezing Content
Data Types
Hyperlinks
Master Detail
Page Setup
Clipboard
Drag & Drop
Printing
Import Excel
Performance
DOM Virtualisation
Value Cache
Row Animation
Massive Row Count
Scrolling Performance
Miscellaneous
Migration
Upgrading to AG Grid 33
Upgrading to AG Grid 32.3
Upgrading to AG Grid 32.2.1
Upgrading to AG Grid 32.1
Upgrading to AG Grid 32
Upgrading to AG Grid 31.3
Upgrading to AG Grid 31.2
Upgrading to AG Grid 31.1
Upgrading to AG Grid 31
Upgrading to Older Versions
Codemods
Other
Context
Change Detection
Custom Components
Aligned Grids
JavaScript Data Grid
AG Grid Error #255
JavaScript
You are using an older version of AG Grid. To upgrade, please see the
migration guide
.
Full Error Text
To show this error text in the dev console, import the
ValidationModule
.
AG Grid Error #255
Full Error Text