Box 1: on-error -
Policies in Azure API Management are divided into inbound, backend, outbound, and on-error.
If there is no on-error section, callers will receive 400 or 500 HTTP response messages if an error condition occurs.
Box 2: context -
Box 3: context -
Box 4: set-status -
The return-response policy aborts pipeline execution and returns either a default or custom response to the caller. Default response is 200 OK with no body.
Custom response can be specified via a context variable or policy statements.
Syntax:
<return-response response-variable-name="existing context variable">
<set-header/>
<set-body/>
<set-status/>
</return-response>
Box 5: on-error -
Reference:
https://docs.microsoft.com/en-us/azure/api-management/api-management-error-handling-policies
https://docs.microsoft.com/en-us/azure/api-management/api-management-transformation-policies