What is the scope of a variable set in parentFlow when an HTTP Request is made to another server?

When a variable is set in a parent flow and an HTTP request is made to another server, the variable does not get transmitted with the request. The other server operates in its own environment, isolated from the parent flow. Therefore, the value of the variable established in the parent flow is not accessible in the context of that external server's processing.

Typically, when making an HTTP request, data like headers and payload can be sent to the server, but the local state, including variables defined within the parent flow, remains confined to the flow where it was created. This design is intended to maintain separation between different contexts and ensure that the data within one flow does not inadvertently impact the execution of another, which could lead to potential conflicts or state management issues.

In contrast, the other options imply some degree of accessibility or mutability of the variable at the other server, which does not accurately reflect how HTTP requests function in a typical MuleSoft environment.