The breaking changes page displays a comprehensive list of all deprecation removals noted in the Canvas API Change Log , GraphQL API Change Log, or Canvas Platform Change Log. Logs can be located in the Canvas Log Archive by Year.
Deprecation of Numerical Variable Substitutions in LTI 1.3 Launch
Certain variable substitutions in custom claim for the LTI 1.3 launch were identified as containing numerical values rather than string values as required by the specification. These numerical variable substitutions will be deprecated and changed to string values on 2022-10-15. The feature flag variable_substitution_numeric_to_string controls this change, and can be used in individual environments to test and determine if this will be an issue for your tool. The affected fields are:
Announcement date: 2022-06-08
Deprecation date: 2022-10-15
An unauthorized response from the JSON API will return a 403 (Forbidden) instead of a 401 code, to be more in line with HTTP standards. Additionally, localization of the “status” field in unauthenticated or unauthorized JSON errors is deprecated; the status will always be given in English.