Generating Custom Application

## When to Use This Skill

Use this skill when you need to:
- Create Lightning applications
- Organize tabs and features into focused apps
- Configure application navigation and branding
- Set up custom page layouts for objects
- Troubleshoot deployment errors related to custom applications
# CustomApplication (Lightning App) Metadata Specification

## Overview

Custom applications (Lightning Apps) that group tabs and functionality to provide a focused user experience for specific business processes. Always configured for Lightning Experience.

## 🎯 Purpose
- Organize related functionality into focused applications
- Group tabs and components for specific user roles
- Provide tailored user experiences
- Control access to specific features and data
- Use Standard navigation for general business applications or Console navigation for specialized service/support workflows requiring multi-tab workspaces
- Create professional, branded application identity with custom colors and branding
- Override standard actions with custom Lightning pages for enhanced user experience
- Enable profile-specific experiences through profile action overrides

## ⚙️ Required Properties

### Core Application Properties
- **fullName**: API name of the application
- **label**: Display name of the application
- **uiType**: Always "Lightning" for modern apps
- **navType**: CRITICAL - Choose based on user requirements and workflow patterns
    - "Standard": DEFAULT for general business applications (e.g., sales, marketing, operations)
    - "Console": ONLY when workflow requires managing multiple records simultaneously with split-view or multi-tab workspace (e.g., customer service, call centers, support operations)
- **formFactors**: Array of form factors (["LARGE"] for desktop, ["SMALL"] for mobile, or both)

### Optional Properties
- **description**: Brief description of the application's purpose
- **tabs**: Array of tab names to include
- **utilityBar**: API name of the Utility Bar configuration
- **brand**: ⚠️ HIGHLY RECOMMENDED - Branding configuration object (headerColor, shouldOverrideOrgTheme, footerColor)
- **actionOverrides**: ⚠️ REQUIRED when custom record pages exist - Action override configuration (actionName, content, formFactor, type, pageOrSobjectType)
- **profileActionOverrides**: Profile-specific action overrides (actionName, content, formFactor, pageOrSobjectType, type, profile)
- **isNavAutoTempTabsDisabled**: Navigation behavior setting (default: false)
- **isNavPersonalizationDisabled**: Personalization setting (default: false)
- **isNavTabPersistenceDisabled**: Tab persistence setting (default: false)

## 🔧 Application Configuration

### Navigation Type Selection (CRITICAL)
**Decision Criteria for navType:**

**Choose "Standard" (DEFAULT) for:**
- General business applications and most workflows
- Single-record focus or linear navigation patterns
- Standard tab-based navigation is sufficient

**Choose "Console" ONLY when workflow requires:**
- Managing multiple related records simultaneously in split-view
- Multi-tab workspace for handling complex, interconnected data
- Contextual information from multiple sources visible at once
- Examples: customer service operations, support desks, call centers

**When in doubt:** Default to "Standard" for most general business use cases

### Navigation Settings
- **isNavAutoTempTabsDisabled**: Controls automatic temporary tab creation
- **isNavPersonalizationDisabled