Result consisted of more than one row - Procedure - mysql

Question

I got this error message:
Result consisted of more than one row
but I check my procedure again and again but I cannot find any problem:
DROP PROCEDURE IF EXISTS SP_Fetch_Returned_With_Serials;
CREATE PROCEDURE `SP_Fetch_Returned_With_Serials`()
BEGIN
DECLARE Num BIGINT UNSIGNED DEFAULT 0;
DECLARE __Product_Id bigint UNSIGNED DEFAULT NULL;
DECLARE __Serials varchar(255) DEFAULT NULL;
DECLARE done INT DEFAULT 0;
DECLARE cur CURSOR FOR
SELECT product_id, serials FROM tmp_table_returned_product_serial;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
START TRANSACTION ;
SET #Document_Id = 0 ;
SET #Product_Id = 0;
SET #Payment_Amount = 0;
OPEN cur;
read_loop:
LOOP
IF done
THEN
LEAVE read_loop;
END IF;
FETCH cur INTO __Product_Id,__Serials;
CALL SP_Separate_Numeric_Values(`__Serials`);
SET #Is_Returnable = 0;
SET #Level_Id = 0;
SET #Free_Day = 0;
SET #Penalty_Percent = 0;
SET #Factor_Type_Id = 0;
SET #Currency_Id = 0;
SET #Customer_Id = 0;
SET #Factor_Id = 0;
SET #Value = 0;
SET #Real_Fee = 0;
SET #Date_At = CURRENT_DATE();
SET #Diff_Days = 0;
SET #New_Factor_Id = 0;
SET #New_Detail_Factor_Id = 0;
SET #Receipt_Remit_Type_Id = 0;
SET #Return_Penalty_Percent = 0;
SET #Return_Penalty_Price = 0;
SET #Document_Number = 0;
SELECT id INTO #Factor_Type_Id FROM Tb_Factor_Types WHERE name = 'back_sale_factor';
SELECT COUNT(NV.Number) INTO #Value FROM Numeric_Values NV;
SELECT TP.is_returnable,
TU.level_id,
currency_id,
customer_id,
VF.id,
VF.product_id,
real_fee,
date_at
INTO #Is_Returnable,#Level_Id,#Currency_Id,#Customer_Id,#Factor_Id,#Product_Id,#Real_Fee,#Date_At
FROM Vw_Factor_Master_Details VF
INNER JOIN Tb_Factor_Detail_Serials TFDS ON TFDS.detail_id = VF.detail_id
INNER JOIN Tb_Products TP ON VF.product_id = TP.id
INNER JOIN Tb_Users TU ON TU.user_id = VF.customer_id
INNER JOIN Numeric_Values NV ON NV.Number = TFDS.serial_id;
IF (#Is_Returnable)
THEN
SET #Product_Title = '';
SET #Error_Msg = '';
SELECT IFNULL(TPT.title, TP.title_en) AS title INTO #Product_Title FROM Tb_Products TP
LEFT JOIN (SELECT title, product_id FROM Tb_Product_Translations WHERE locale = #Locale) TPT
ON TP.id = TPT.product_id WHERE product_id = #Product_Id;
SELECT message INTO #Error_Msg FROM Tb_Errors WHERE error_code = 1000028 AND locale = #Locale;
SET #Error_Msg = REPLACE(#Error_Msg, ':product', #Product_Title);
SIGNAL SQLSTATE '45000'
SET MESSAGE_TEXT = #Error_Msg;
END IF;
SELECT DATEDIFF(CURRENT_DATE(), #Date_At) INTO #Diff_Days;
SELECT MAX(`number`) INTO Num FROM Tb_Factors WHERE year_id = #Fiscal_Year AND type = 'sale_factor';
SET Num = ifnull(Num, 0) + 1;
SELECT JSON_EXTRACT(JSON_EXTRACT(TS.value, CONCAT('$.', #Level_Id)), '$.free_day')
INTO #Free_Day
FROM Tb_Settings TS
WHERE `key` = 'returned_product';
SELECT JSON_EXTRACT(JSON_EXTRACT(TS.value, CONCAT('$.', #Level_Id)), '$.penalty_percent')
INTO #Penalty_Percent
FROM Tb_Settings TS
WHERE `key` = 'returned_product';
IF (#Diff_Days > #Free_Day)
THEN
SET #Payment_Amount = #Payment_Amount + ((#Real_Fee - (#Real_Fee * #Penalty_Percent / 100)) * #Value);
SET #Return_Penalty_Percent = #Penalty_Percent;
SET #Return_Penalty_Price = #Real_Fee * #Penalty_Percent / 100;
END IF;
IF(#New_Factor_Id = 0)
THEN
INSERT INTO Tb_Factors (type, sale_place, product_type, company_id, branch_id, cash_desk_id, type_id, year_id,
currency_id, finaler_id, signature_id, customer_id, final_at, signature_at,
reference_factor_id, creator_id, number)
VALUES ('sale_factor', 'branch', 'product', #Company, #Branch_Id, NULL, #Factor_Type_Id, #Fiscal_Year,
#Currency_Id, #Auth_User, #Auth_User, #Customer_Id, CURRENT_TIMESTAMP(), CURRENT_TIMESTAMP(),
#Factor_Id, #Auth_User, Num);
SET #New_Factor_Id = LAST_INSERT_ID();
END IF;
INSERT INTO Tb_Factor_Details (product_id, value, real_fee, fee, factor_id, creator_id, return_penalty_percent,
return_penalty_price)
VALUES (#Product_Id, #Value, #Real_Fee, #Real_Fee, #New_Factor_Id, #Auth_User, #Penalty_Percent,
#Return_Penalty_Price);
SET #New_Detail_Factor_Id = LAST_INSERT_ID();
INSERT INTO Tb_Factor_Detail_Serials (serial_id, detail_id)
SELECT NV.Number, #New_Detail_Factor_Id FROM Numeric_Values NV;
SELECT id INTO #Receipt_Remit_Type_Id FROM Tb_Receipt_Remit_Types WHERE name = 'return_of_sales';
SET #Warehouse_Id = 0;
SELECT id INTO #Warehouse_Id FROM Tb_Warehouses WHERE warehouse_branch_id = #Branch_Id LIMIT 1;
IF(#Document_Id = 0)
THEN
SELECT document_number
FROM Tb_Documents
WHERE fiscal_year_id = #Fiscal_Year
ORDER BY document_number DESC
LIMIT 1
INTO #Document_Number;
SET #Document_Number = #Document_Number + 1;
INSERT INTO Tb_Documents (type, factor_id, warehouse_id, receipt_remit_type_id, fiscal_year_id, document_number,
creator_id)
VALUES ('receipt', #New_Factor_Id, #Warehouse_Id, #Receipt_Remit_Type_Id, #Fiscal_Year, #Document_Number,
#Auth_User);
SET #Document_Id = LAST_INSERT_ID();
END IF;
INSERT INTO Tb_Document_Details (product_id, value, confirmed_at, confirmed_by, creator_id, document_id)
VALUES (#Product_Id, #Value, CURRENT_TIMESTAMP(), #Auth_User, #Auth_User, #Document_Id);
SET #Document_Detail_Id = LAST_INSERT_ID();
INSERT INTO Tb_Detail_Serial_Numbers (serial_number_id, detail_id, origin_cost_center_id, confirmed_at,
confirmed_by)
SELECT NV.Number, #Document_Detail_Id,NULL,CURRENT_TIMESTAMP(),#Auth_User FROM Numeric_Values NV;
END LOOP;
CLOSE cur;
SET #Type_Id = 0;
SELECT id INTO #Type_Id FROM Tb_Payment_Types WHERE name = 'cash' LIMIT 1;
INSERT INTO Tb_Receive_Payment (model_type, model_id, factor_id, type_id, receive_amount, payment_amount,year_id,creator_id)
VALUES ('cashdesk', NULL, #New_Factor_Id, #Type_Id, 0, #Payment_Amount,#Fiscal_Year,#Auth_User);
SET #Payment_Id = LAST_INSERT_ID();
SELECT #Factor_Id as factor_id,#Payment_Id as payment_id,#Payment_Amount as payment_amount;
COMMIT;
END