Range failed with dw1000

Hi:
I use the code of dw1000_api_rev2p14 for DS-TWR witch MCU nrf52832. The tx_poll_msg message can be received , but send the response failed use dwt_starttx(DWT_START_TX_DELAYED | DWT_RESPONSE_EXPECTED) . I want to know which parameters need to be modified to do it work.
Thank you.
Best regards