diff --git a/db/routines/vn/procedures/balance_create.sql b/db/routines/vn/procedures/balance_create.sql
index 9fb8b614c..a3f498661 100644
--- a/db/routines/vn/procedures/balance_create.sql
+++ b/db/routines/vn/procedures/balance_create.sql
@@ -6,6 +6,15 @@ CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`balance_create`(
 	IN vIsConsolidated BOOLEAN,
 	IN vInterGroupSalesIncluded BOOLEAN)
 BEGIN
+/**
+ * Crea un balance financiero para una empresa durante un período de tiempo determinado
+ *
+ * @param vStartingMonth Mes de inicio del período
+ * @param vEndingMonth Mes de finalización del período
+ * @param vCompany Identificador de la empresa
+ * @param vIsConsolidated Indica si se trata de un balance consolidado
+ * @param vInterGroupSalesIncluded Indica si se incluyen las ventas dentro del grupo
+ */
 	DECLARE intGAP INT DEFAULT 7;
 	DECLARE vYears INT DEFAULT 2;
 	DECLARE vYear TEXT;
@@ -71,8 +80,8 @@ BEGIN
 	CREATE OR REPLACE TEMPORARY TABLE tmp.balanceDetail
 		SELECT cr.companyId receivingId,
 				ci.companyId issuingId,
-				year(IFNULL(r.bookEntried,IFNULL(r.booked, r.issued))) `year`,
-				month(IFNULL(r.bookEntried,IFNULL(r.booked, r.issued))) `month`,
+				YEAR(IFNULL(r.bookEntried,IFNULL(r.booked, r.issued))) `year`,
+				MONTH(IFNULL(r.bookEntried,IFNULL(r.booked, r.issued))) `month`,
 				expenseFk,
 				SUM(taxableBase) amount
 			FROM invoiceIn r
@@ -129,7 +138,7 @@ BEGIN
 		SET vQuery = CONCAT(
 			'UPDATE tmp.balance b
 						JOIN
-						(SELECT expenseFk, SUM(amount) as amount
+						(SELECT expenseFk, SUM(amount)
 							FROM tmp.balanceDetail
 							WHERE year = ?
 							GROUP BY expenseFk
@@ -151,7 +160,7 @@ BEGIN
 							SUM(IF(year = ?, venta, 0)) y0,
 							c.Gasto
 						FROM bs.ventas_contables c
-							JOIN tCompanyReceiving cr on cr.companyId = c.empresa_id
+							JOIN tCompanyReceiving cr ON cr.companyId = c.empresa_id
 						WHERE  month BETWEEN ? AND ?
 						GROUP BY c.Gasto
 				) sub ON sub.gasto = b.expenseFk COLLATE utf8_general_ci