I've added a comprehensive deletion warning system that addresses the data impact concerns:

️ Enhanced Deletion Warning Features

1. Detailed Deletion Dialog

• Warning icon and clear title indicating the severity
• Rate details showing exactly what's being deleted
• Fallback rate information showing what will be used instead

2. Data Impact Warning

• Red alert box highlighting the potential data impact
• Clear explanation of what happens to reports and transactions
• Fallback rate display showing the exact rate that will be used
• Coordination reminder to check with finance team

3. Fallback Rate Logic

The system now intelligently determines what rate will be used after deletion:

• Previous custom rate if one exists for the same currency
• Market rate if no previous custom rate exists
• Clear indication of which fallback will be used

4. Enhanced Rate Information

• Creation details (who created it, when, why)
• Date formatting consistent with the rest of the application
• Rate value clearly displayed

5. User Experience Improvements

• Two-step confirmation process (click delete → confirm in dialog)
• Cancel option prominently displayed
• Red delete button to indicate destructive action
• Comprehensive information to make informed decisions

6. Key Warning Messages

The dialog now warns users that:

• Reports using this custom rate will automatically fall back to the previous rate
• This may cause changes in financial calculations and historical data
• Coordination with the finance team may be necessary
• The change affects all transactions from the rate's valid date onwards

This ensures users understand the full impact of deleting a custom rate and can make informed decisions about data integrity and financial reporting accuracy.

I've added a comprehensive information box specifically for customer admins that explains the relationship between custom rates and report configurations:

Custom Rate Configuration Info Box

1. Conditional Display

• Only shown to Customer Admins (based on clientConfig.isCustomerAdmin)
• Blue-themed alert to distinguish it from warnings/errors
• Prominent placement right after the header for maximum visibility

2. Key Information Provided

Configuration Requirement:

• Custom rates are only active when currencies are configured in report settings
• Rates apply to currency conversions in reports where configuration is enabled

Customer Admin Responsibilities:

• Coordinate with Account Manager for proper setup
• Verify currency configuration in reports
• Ensure correct base currency settings
• Confirm conversion settings are applied to needed reports

3. Visual Design Elements

Icons and Structure:

• Info icon for the main alert
• Settings icon for configuration context
• External link icon for account manager contact
• Structured layout with clear sections

Color Scheme:

• Blue background (non-alarming, informational)
• Highlighted text for important points
• Bullet points for easy scanning

4. Actionable Guidance

The info box provides specific action items:

• Contact Account Manager for verification
• Check report configuration settings
• Ensure currency alignment between rates and reports
• Verify base currency consistency

5. Professional Context

The message emphasizes:

• Business relationship (Account Manager coordination)
• Technical requirements (report configuration)
• Data integrity (proper currency conversion)
• Workflow integration (rates → config → reports)

This ensures customer admins understand that setting custom rates is only the first step, and they need to work with their account managers to ensure the rates are properly integrated into their reporting infrastructure.