def METHOD_NAME(request):
    """
    Return a mapping of dm+d VMP ID to previous VMP IDs
    dm+d VPM IDs can change.  When they do, the data we obtain in the coding system release
    contains a record of the previous VMP ID.  Any system using a dm+d codelist with a
    VMP ID needs to also look up any previous or subsequent IDs in order to avoid missing
    medications.
    This endpoint is intended to be used by backends to determine any additional related codes
    to include with set of dm+d codes.
    """
    return JsonResponse(vmp_ids_to_previous(), safe=False)