The GET /fscmRestApi/resources/11.13.18.05/buyersLOV returns no data

Summary:

I'm trying to fetch the list of all buyers from Fusion using the GET /fscmRestApi/resources/11.13.18.05/buyersLOV , however when I run this API from Postman I get the below response -

I have also added the Proc manager and Buyer roles to the user but still face the same issue. Any inputs will really help.

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