no-content-type-response-header-definition

Overview

This rule belongs to the openapi-v3-standards-validation ruleset and states that:

The Content-Type header must not be explicitly defined in the Response Object headers section as the content section is dedicated for adding this information. If a definition is found, it will be ignored.

Property	Value
Enabled	Yes
Maximum Severity	Warning
Message	Content-Type header definition found in response headers section.
Code	OPENAPI3STANDARDS_V198
Type	Validation
Rule System	Semantic
Broad Category	Responses
Products Impacted	API Transformer, Code Generation, Developer Experience Portal
Tags	openapi3 openapi standards semantic validation headers content type response

Suggested Fixes

• Remove the header named Content-Type from the Response Object headers list.
• Provide the information related to expected/allowed response content types using the Response Object content section.

For More Information

• https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.0.3.md#openapi-specification
• https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.1.0.md#response-object
• https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.0.3.md#response-object
• https://docs.apimatic.io/rulesets/overview/