First, thank you to the authors for the significant progress on this draft
since the last WG Last call
<https://mailarchive.ietf.org/arch/msg/oauth/fkmkT2f5o-4iktHR9O5xkHK62W4/>.

Second, on review of the latest, there are still some areas that could be
improved. For this last call, I just went direct to github with review
items:

- Txn-Token vs Txn-Token
<https://github.com/oauth-wg/oauth-transaction-tokens/issues/334>
- "This claim MUST be omitted if not set."
<https://github.com/oauth-wg/oauth-transaction-tokens/issues/333>
- Txn-Token Request: OPTIONAL is different than RECOMMENDED
<https://github.com/oauth-wg/oauth-transaction-tokens/issues/332>
- ... req_wl ...
<https://github.com/oauth-wg/oauth-transaction-tokens/issues/331>
- tctx/rctx/scope
<https://github.com/oauth-wg/oauth-transaction-tokens/issues/330>
- iss issue
<https://github.com/oauth-wg/oauth-transaction-tokens/issues/329>
- Assuming lists were wanted?
<https://github.com/oauth-wg/oauth-transaction-tokens/issues/328>
- merge Introduction and Overview
<https://github.com/oauth-wg/oauth-transaction-tokens/issues/327>

and indirectly via slack:

rearranged spurious lines in the document history section
<https://github.com/oauth-wg/oauth-transaction-tokens/pull/320>

Added doc history
<https://github.com/oauth-wg/oauth-transaction-tokens/pull/319>



On Fri, Mar 27, 2026 at 6:21 AM Rifaat Shekh-Yusef via Datatracker <
[email protected]> wrote:

> This message starts a WG Last Call for:
> draft-ietf-oauth-transaction-tokens-08
>
> This Working Group Last Call ends on 2026-04-10
>
> Abstract:
>    Transaction Tokens (Txn-Tokens) are designed to maintain and
>    propagate user identity, workload identity and authorization context
>    throughout the Call Chain within a trusted domain during the
>    processing of external requests (e.g. such as API calls) or requests
>    initiated internally within the trust domain.  Txn-Tokens ensure that
>    this context is preserved throughout the Call Chain thereby enhancing
>    security and consistency in complex, multi-service architectures.
>
> File can be retrieved from:
>
> Please review and indicate your support or objection to proceed with the
> publication of this document by replying to this email keeping
> [email protected]
> in copy. Objections should be explained and suggestions to resolve them are
> highly appreciated.
>
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> Property Rights (IPR) disclosure obligations described in BCP 79 [1].
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> Thank you.
>
> [1] https://datatracker.ietf.org/doc/bcp78/
> [2] https://datatracker.ietf.org/doc/bcp79/
> [3] https://datatracker.ietf.org/doc/rfc6701/
>
> The IETF datatracker status page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-ietf-oauth-transaction-tokens/
>
> There is also an HTML version available at:
> https://www.ietf.org/archive/id/draft-ietf-oauth-transaction-tokens-08.html
>
> A diff from the previous version is available at:
>
> https://author-tools.ietf.org/iddiff?url2=draft-ietf-oauth-transaction-tokens-08
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