The following errata report has been submitted for RFC6749,
"The OAuth 2.0 Authorization Framework".

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You may review the report below and at:
https://www.rfc-editor.org/errata/eid8791

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Type: Technical
Reported by: Filip Skokan <[email protected]>

Section: 3.2

Original Text
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Request and response parameters MUST NOT be included more than once.

Corrected Text
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Request and response parameters defined by this specification MUST NOT be 
included more than once. This requirement also applies to parameters defined by 
extensions unless the extension explicitly defines otherwise for a specific 
parameter.

Notes
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Section 3.2 (Token Endpoint) contains the same text as Section 3.1 
(Authorization Endpoint). Verified erratum 5708 
(https://www.rfc-editor.org/errata/eid5708) addressed the identical text in 
Section 3.1 by adding "defined by this specification" but did not correct the 
same text in Section 3.2. This erratum applies both that same scoping fix and 
the additional extension-parameter clarification to Section 3.2. Several 
extensions explicitly allow repeated parameters at the token endpoint, e.g., 
the "resource" parameter in RFC 8707 Section 2 ("Multiple resource parameters 
MAY be used to indicate that the requested token is intended to be used at 
multiple resources.") and the "resource" and "audience" parameters in RFC 8693 
Section 2.1. The added text makes clear that extension parameters default to 
not being repeated, unless the extension defining them explicitly allows it. 
See also: 
https://mailarchive.ietf.org/arch/msg/oauth/l3Yp2W4QXHdCXgO3NVpC6syUMws/

Instructions:
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RFC6749 (draft-ietf-oauth-v2-31)
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Title               : The OAuth 2.0 Authorization Framework
Publication Date    : October 2012
Author(s)           : D. Hardt, Ed.
Category            : PROPOSED STANDARD
Source              : Web Authorization Protocol
Stream              : IETF
Verifying Party     : IESG

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