channel sounding cs channel map update instant passing

I enable cs procedure and set the procdure count equals to 3, let procedure interval to be 10.

I want to change the cs channel map between procedures. so when I send  HCI_LE_CS_Set_Channel_Classification after HCI_LE_CS_Procedure_Enable.

I got 3 subevent, the first is normal, the second and the third all abort, reason is 0x63. 

0x6 I can not find the error code.

0x3 is BT_HCI_LE_CS_PROCEDURE_ABORT_REASON_CHMAP_INSTANT_PASSED.

I using ellysis to catch the air packet,  instant field in LL_CS_CHANNEL_MAP_IND  is 43,  which is bigger than conn event below:

RX: EVT={'code': <EvtCode.META_LE: 62>, 'subcode': <EvtMetaCode.LE_CS_SUBEVENT_RESULT: 49>, 'param': {'conhdl': 150, 'config_id': 0, 'start_acl_conn_event_counter': 37, 'procedure_counter': 1, 'frequency_compensation': 0, 'reference_power_level': 0, 'procedure_done_status': 15, 'subevent_done_status': 15, 'abort_reason': 63, 'num_antenna_paths': 4, 'num_steps_reported': 0, 'data': b''}, 'num': 3}

what is nordic cs channel map update strategy? or how can I change channel map between procedures and procedure (at the procedure count is not equals to 1)
besides, error code 0x6 is for what abort reason?
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