To fix the full OCAPI URL when encountering issues, what is the primary change that should be made?

The primary change that should be made to fix the full OCAPI URL when encountering issues involves updating the base URL setting. This is essential because the base URL forms the foundational endpoint for API requests. If the base URL is incorrect, it will lead to requests being sent to the wrong server or resource, resulting in failures in communication with the API.

Considering the other choices, changing from POST to GET pertains to the method of sending data in the request and does not directly address the URL issue itself. The authorization header is vital for securing API requests but does not fix the URL if it’s improperly constructed. Specifying the API version can be necessary for ensuring compatibility with different functionalities or features; however, it does not rectify a fundamentally incorrect base URL. Therefore, the most effective primary change to address issues with the full OCAPI URL is to update the base URL setting.