Hello @Ethan Wong

Even batch feature sends one request with multiple items, the items are opened/closed individually as figure shown below:

Hence, invalid RIC does not fail over the whole batch. The application still receive data of valid RICs but it will get status response indicating that the steam for invalid RIC is closed as shown in example below:

- Refresh message returned for a valid RIC

	Msg Type: MsgType.REFRESH_RESP
	Msg Model Type: MARKET_PRICE
	Indication Flags: REFRESH_COMPLETE | CLEAR_CACHE
	Hint Flags: HAS_ATTRIB_INFO | HAS_ITEM_GROUP | HAS_PERMISSION_DATA | HAS_QOS | HAS_RESP_TYPE_NUM | HAS_SEQ_NUM | HAS_STATE
	State: OPEN, OK, NONE,  "All is well"
	Qos: (RT, TbT)
	Group: 00040843435879e8
	PermissionData: 030843213c ( 0x03,0x08,0x43,0x21,0x3c ) 
	SeqNum: 45630
	RespTypeNum: 0 (RespType.SOLICITED)
	AttribInfo
		ServiceName: API_ELEKTRON_EPD_RSSL
		ServiceId: 2115
		Name: JPY=
		NameType: 1 (RIC)
	Payload: 2090 bytes
		FIELD_LIST
			FIELD_ENTRY 1/PROD_PERM: 213
			FIELD_ENTRY 2/RDNDISPLAY: 153
			FIELD_ENTRY 3/DSPLY_NAME: DANSKE BANK  COP

- Status message returned for an invalid RIC

Msg Type: MsgType.STATUS_RESP
	Msg Model Type: MARKET_PRICE
	Indication Flags: 
	Hint Flags: HAS_ATTRIB_INFO | HAS_STATE
	State: CLOSED, SUSPECT, NOT_FOUND,  "The record could not be found"
	AttribInfo
		ServiceName: API_ELEKTRON_EPD_RSSL
		ServiceId: 2115
		Name: IBM.M
		NameType: 1 (RIC)
	Payload: None

Normally, the stream of batch request is closed after the request is sent to the server regardless it contains valid/invalid RICs. Hence, the application receives completion events as example below:

Receive a COMPLETION_EVENT, com.reuters.rfa.internal.session.omm.OMMBatchSubHandleImpl@4a8171b

This completion event does not close the EventQueue or terminates the consumer. The application still receive data of valid RICs.