Hi,

I have been selected as the Operational Directorate (opsdir) reviewer for this Internet-Draft. 

The Operational Directorate reviews all operational and management-related Internet-Drafts to ensure alignment with operational best practices and that adequate operational considerations are covered.

A complete set of _"Guidelines for Considering Operations and Management in IETF Specifications"_ can be found at https://datatracker.ietf.org/doc/draft-ietf-opsawg-rfc5706bis/.

While these comments are primarily for the Operations and Management Area Directors (Ops ADs), the authors should consider them alongside other feedback received.


- Document: draft-ietf-httpapi-digest-fields-problem-types-04

- Reviewer: Linda Dunbar

- Review Date: Feb 

- Intended Status: Standards Track 

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## Summary 
This draft introduces specific HTTP problem types for Digest field validation failures, improving interoperability and diagnosability, and would benefit from brief additional guidance on operational monitoring and information disclosure considerations. 

Choose one: 

- Ready:  The document is clear and ready for publication. 

## General Operational Comments Alignment with RFC 5706bis 

Provide an overview of the draft’s operational feasibility, readability, and alignment with RFC5706bis guidelines. Example: 

 This document would benefit from brief operational guidance on logging, metrics, and monitoring. In particular, it would be helpful to recommend that implementations track failure rates per problem type and consider alerting on abnormal spikes, as these may indicate misconfiguration, interoperability issues, or attack patterns.

Nits: 
- Ensure consistent terminology when referring to “Digest field”, “Content-Digest”, and related header names to avoid ambiguity.

Best Regards, Linda Dunbar