The multi-part identifier error

I've being trying to figured out why this error is happening but no lucky yet.

The code:

SELECT CONVERT(VARCHAR, OPER.DATE_OPER, 112) + ' ' +                                                                 -- DATE OPER YYYYMMDD
	CONVERT(VARCHAR, OPER.OPE_TIME, 102) + ' ' +																		-- OPE TIME HH:MI:SS
	FNUMBER.FILE_SEQUENCY_REND + ' ' +																					-- BATCH NUMBER
	RIGHT(REPLICATE('0',16) + CONVERT(VARCHAR(16), DBO.F_EXTRACT_NBR_CHAR(RECEIVER.C_CPF)),16) + ' ' +						-- RECEIVER CPF / CNPJ
	DBO.FN_FORMAT_RIGHT_SPACES(RECEIVER.C_NAME, 40) + ' ' +																	-- RECEIVER NAME
	RIGHT(REPLICATE('0',14) + CONVERT(VARCHAR(14), DBO.F_EXTRACT_NBR_CHAR(RECEIVER.C_PHONE1)),14) + ' ' +					-- RECEIVER PHONE NUMBER
	DBO.FN_FORMAT_RIGHT_SPACES(RECEIVER.C_ADDRESS, 50) + ' ' +																-- RECEIVER ADDRESS
	DBO.FN_FORMAT_RIGHT_SPACES(RECEIVER.C_CITY, 20) + ' ' +																	-- RECEIVER CITY
	DBO.FN_FORMAT_RIGHT_SPACES(ACC.ACCOUNT_STATE) + ' ' +																-- RECEIVER STATE
	RIGHT(REPLICATE('0',14) + CONVERT(VARCHAR(14), DBO.F_EXTRACT_NBR_CHAR(RECEIVER.C_ZIP)),14) + ' ' +						-- RECEIVER ZIP
	DBO.FN_FORMAT_RIGHT_SPACES(RECEIVERCOUNTRY.COUNTRY , 20) + ' ' +														-- RECEIVER COUNTRY
	RIGHT(REPLICATE('0',3) + CONVERT(VARCHAR(3), ISNULL(S_BANK.BANK_NUMBER, 0)),3) + ' ' + 	                                -- BANK NUMBER
	DBO.FN_FORMAT_RIGHT_SPACES(ACC.AGENCY, 30) +	' ' +																-- AGENCY
	DBO.FN_FORMAT_RIGHT_SPACES(ACC.ACCOUNT, 16) +	' ' +																-- ACCOUNT NUMBER (CHAR)
	LEFT(ISNULL(ACC.ACCOUNT_TYPE, 'C/C'), 1) + ' ' +                                                                  -- ACCOUNT TYPE
	DBO.FN_FORMAT_RIGHT_SPACES(SENDER.C_NAME, 40) +	' ' +																	-- SENDER
	DBO.FN_FORMAT_RIGHT_SPACES(SENDER.C_CUSTOMER_ID, 40) +	' ' +															-- SENDER ID
	DBO.FN_FORMAT_RIGHT_SPACES(SENDER.C_ADDRESS, 50) + ' ' +																-- SENDER ADDRESS
	DBO.FN_FORMAT_RIGHT_SPACES(SENDER.C_CITY, 20) + ' ' +																	-- SENDER CITY
	DBO.FN_FORMAT_RIGHT_SPACES(ACC.ACCOUNT_STATE,2) + ' ' +																-- SENDER STATE
	RIGHT(REPLICATE('0',14) + CONVERT(VARCHAR(14), DBO.F_EXTRACT_NBR_CHAR(SENDER.C_ZIP)),14) + ' ' +						-- RECEIVER ZIP
	DBO.FN_FORMAT_RIGHT_SPACES(SENDERCOUNTRY.COUNTRY , 20) + ' ' +															-- SENDER COUNTRY
	RIGHT(REPLACE(REPLICATE('0', 15) + CAST(CAST(AMOUNT * RATE AS NUMERIC(15,2)) AS VARCHAR), '.', '') ,15) + ' ' +			-- FOREING AMOUNT
	'L' + ' ' +																												-- CURRENCY TYPE L = LOCAL / D = DOLLAR
	'N' + ' ' +																												-- TRANS TYPE - N=NEW OR V=VOID
	RIGHT(REPLICATE('0',10) + CONVERT(VARCHAR(10), OPER.OPE_NUMBER),10) + ' ' +										-- OPERATIONS NUMBER
	SPACE(20) + ';' +                                                                                                      -- LIVRE
	SPACE(80)                                                                                                             -- LIVRE
	AS LINE,
	OPER.DATE_OPER,
	OPER.OPE_TIME,
	OPER.FOREING,
	OPER.OPE_NUMBER,
	OPER.OPE_SUBNUMBER, 
	OPER.MAKER,
	OPER.AMOUNT,
	OPER.FEE_AMOUNT,
	ISNULL(OPER.COM_STAR,0) AS COM_STAR
FROM S_OPERATION OPER, S_FILE_NUMBER FNUMBER
	JOIN S_CUSTOMER SENDER
	ON OPER.SENDER_ID = SENDER.C_CUSTOMER_ID
	JOIN S_CUSTOMER RECEIVER
	ON OPER.RECEIVER_ID = RECEIVER.C_CUSTOMER_ID
	JOIN S_COUNTRY SENDERCOUNTRY
	ON SENDER.C_COUNTRY_ID = SENDERCOUNTRY.COUNTRY_ID
	JOIN S_ACCOUNT ACC
	ON OPER.ACC_ID = ACC.ACCOUNT_ID
	JOIN S_BANK
	ON ACC.BANK_ID = S_BANK.BANK_ID
	JOIN S_OPERATIONATION_PAYERBATCH
	ON OPER.OPE_NUMBER = S_OPERATIONATION_PAYERBATCH.OPE_NUMBER
	WHERE S_OPERATIONATION_PAYERBATCH.IDPAYERBATCH = @IDPAYERBATCH

The error:

Msg 4104, Level 16, State 1, Procedure sp_generate_payerbatch, Line 208
The multi-part identifier "OPER.SENDER_ID" could not be bound.
Msg 4104, Level 16, State 1, Procedure sp_generate_payerbatch, Line 211
The multi-part identifier "OPER.RECEIVER_ID" could not be bound.
Msg 4104, Level 16, State 1, Procedure sp_generate_payerbatch, Line 217
The multi-part identifier "OPER.ACC_ID" could not be bound.

Thanks for any help