CJM-124396: Add messageExclusion details fields to messageFeedback schema

[akshaysethi92]

Summary

Add exclusion details field to message delivery feedback XDM schema to enable monitoring of additional exclusion-specific data such as invalid domains for personalizedDomainNotValid exclusion in Customer Journey Management.

Changes Made

New Schema File Created

message-exclusion-details.schema.json

• New reusable schema for exclusion-specific details
• Contains invalidDomains field (array of strings)
• Extensible for future exclusion detail types

Schema Updates

message-delivery-feedback.schema.json

• Added details field to messageExclusion object
• References the new message-exclusion-details schema via $ref
• Keeps parent schema clean and maintainable

Example Files

message-exclusion-details.example.1.json

• Demonstrates standalone exclusion details structure
• Shows invalidDomains array with sample domains

message-delivery-feedback.example.2.json

• Demonstrates message exclusion with details
• Shows complete feedback event with exclusion reason personalizedDomainNotValid
• Includes invalidDomains array with multiple domain examples

Design Decisions

• Extensibility: Future exclusion types can easily add new fields without modifying parent schema
• Optional Fields: All fields remain optional to maintain backward compatibility

Use Cases

Exclusion Reason PersonalizedDomainNotValid

When a message is excluded due to invalid personalized domains, the invalidDomains array captures which domains caused the rejection, enabling:

• Analytics: Query and aggregate exclusions by domain
• Reporting: Identify problematic domain patterns
• Troubleshooting: Understand why specific messages were excluded

Testing

✅ JSON schema validation passes for all files
✅ JSON syntax validation passes
✅ No linter errors
✅ Backward compatibility maintained (all fields optional)
✅ Example files validate against schemas

Examples

Without exclusion details (existing behavior)

Any exclusion type that doesn't need additional details:

{
  "messageExclusion": {
    "code": "SomeOtherExclusionCode",
    "reason": "SomeOtherExclusionReason"
  }
}

With exclusion details (new capability)

message-delivery-feedback.example.2.json - personalizedDomainNotValid with invalid domains:

{
  "messageExclusion": {
    "code": "050109",
    "reason": "personalizedDomainNotValid",
    "details": {
      "invalidDomains": ["example.com", "test-domain.org"]
    }
  }
}

[waykar-prashant]

LGTM