Overview#

MUST NOT or the phrase "SHALL NOT" (RFC 2119), which are Case-sensitive (RFC 8174) mean that the definition is an absolute prohibition of the specification. RFC 2119

We may use MUST NOT in other contexts but we are implying the same interpretation as a Best Current Practice

More Information#

There might be more information for this subject on one of the following:

• Access Token Type
• Actor_token_type
• AttributeSecurityGUID
• Authentication Context Class Reference
• Authentication Request
• Authorization Server Authentication of the End-User
• Authorization_endpoint
• CA Constraint
• ClientHello
• Complex Attribute
• Custom URI scheme
• DNSName
• Deprecating Secure Sockets Layer Version 3.0
• Domain Authorization Document
• ES256
• Exp
• HTTP Warn Codes
• HelloRetryRequest
• Hosted domain
• Id_token_signing_alg_values_supported
• Identity Token
• Identity Token Claims
• Identity Token Validation
• Informational
• Kerberos Cryptosystem Negotiation Extension
• Key words for use in RFCs to Indicate Requirement Levels
• KeyUsage
• LDAP Three-valued logic
• Language-Tag
• Logout Token
• Nbf
• OAuth Dynamic Client Registration Metadata
• OAuth Error
• OR-Name
• OpenAssertionType
• OpenID Connect Back-Channel Logout
• OpenID Connect Front-Channel Logout
• PROHIBITED
• Password Character Composition
• Password Minimum Age
• Privacy Considerations
• Public Wi-Fi
• RFC 2119
• Record Protocol
• Refresh Token
• Representational State Transfer
• Response_type
• RootDSE
• SCIM Replace Request
• SCIM Schemas Attribute
• SCIM externalId
• SCIM id
• SHALL NOT
• SSLv2
• SSLv3
• Sec-Token-Binding
• Security Considerations
• Site Certificate
• Supported_versions
• TLS_NULL_WITH_NULL_NULL
• URI Authorities
• URI Fragment Identifiers
• URI Path
• URI Query
• Understanding DIT Content Rules
• UserInfo Response
• X-SEARCH-FLAGS