set am cb with UCP_AM_FLAG_PERSISTENT_DATA and am recv UCP_AM_RECV_ATTR_FLAG_RNDV confusing

[XCloudAI]

If setting ucp_worker_set_am_recv_handler with the param.flags = UCP_AM_FLAG_PERSISTENT_DATA, in the ucp_am_recv_callback_t function, will the ucp_am_recv_param_t always be setparam.flags with UCP_AM_RECV_ATTR_FLAG_DATA flags and without UCP_AM_RECV_ATTR_FLAG_RNDV?
If so, does it mean that rndv protocol won't work when setting ucp_worker_set_am_recv_handler with the param.flags = UCP_AM_FLAG_PERSISTENT_DATA
If not, the will always be called with @ref UCP_AM_RECV_ATTR_FLAG_DATA flag set in below sentence make me confused.

    /**
     * Guarantees that the specified @ref ucp_am_recv_callback_t callback,
     * will always be called with @ref UCP_AM_RECV_ATTR_FLAG_DATA flag set,
     * so the data will be accessible outside the callback, until
     * @ref ucp_am_data_release is called.
     */
    UCP_AM_FLAG_PERSISTENT_DATA = UCS_BIT(1)