diff --git a/back/methods/collection/getSales.js b/back/methods/collection/getSales.js
index 8f5bfaeef..a9e5f2e60 100644
--- a/back/methods/collection/getSales.js
+++ b/back/methods/collection/getSales.js
@@ -60,15 +60,17 @@ module.exports = Self => {
         if (print) await Self.rawSql('CALL vn.collection_printSticker(?,NULL)', [id], myOptions);
 
         for (let ticket of tickets) {
-            let observations = ticket.observaciones.split(' ');
+            if (ticket.observaciones) {
+                let observations = ticket.observaciones.split(' ');
 
-            for (let observation of observations) {
-                const salesPerson = ticket.salesPersonFk;
-                if (observation.startsWith('#') || observation.startsWith('@')) {
-                    await models.Chat.send(ctx,
-                        observation,
-                        $t('ticketCommercial', {ticket: ticket.ticketFk, salesPerson})
-                    );
+                for (let observation of observations) {
+                    const salesPerson = ticket.salesPersonFk;
+                    if (observation.startsWith('#') || observation.startsWith('@')) {
+                        await models.Chat.send(ctx,
+                            observation,
+                            $t('ticketCommercial', {ticket: ticket.ticketFk, salesPerson})
+                        );
+                    }
                 }
             }
         }
diff --git a/db/routines/vn/procedures/entry_isEditable.sql b/db/routines/vn/procedures/entry_isEditable.sql
index a05a1fd92..c279fac65 100644
--- a/db/routines/vn/procedures/entry_isEditable.sql
+++ b/db/routines/vn/procedures/entry_isEditable.sql
@@ -18,7 +18,7 @@ BEGIN
 			AND e.id = vSelf;
 
 	IF vIsEditable AND NOT IFNULL(@isModeInventory, FALSE) THEN
-		CALL util.throw('Entry is not editable');
+		CALL util.throw(CONCAT('Entry ', vSelf, ' is not editable'));
 	END IF;
 END$$
 DELIMITER ;
diff --git a/db/routines/vn/procedures/invoiceIn_booking.sql b/db/routines/vn/procedures/invoiceIn_booking.sql
index cd838861a..c194a774d 100644
--- a/db/routines/vn/procedures/invoiceIn_booking.sql
+++ b/db/routines/vn/procedures/invoiceIn_booking.sql
@@ -13,20 +13,32 @@ BEGIN
  * @param vBookEntry Id de asiento, si es NULL se genera uno nuevo
  */
 	DECLARE vFiscalYear INT;
-	DECLARE vHasDistinctTransactions INT;
+	DECLARE vDistinctTransactions INT;
+	DECLARE vHasRepeatedTransactions BOOL;
 
-	SELECT COUNT(DISTINCT transactionTypeSageFk) INTO vHasDistinctTransactions
+	SELECT COUNT(DISTINCT iit.transactionTypeSageFk) INTO vDistinctTransactions
 		FROM invoiceIn ii
 			JOIN invoiceInTax iit ON iit.invoiceInFk = ii.id
 			JOIN invoiceInSerial iis ON iis.code = ii.serial 
-		WHERE ii.id = vSelf
+		WHERE iit.invoiceInFk = vSelf
 			AND iis.taxAreaFk = 'CEE'
-			AND transactionTypeSageFk;
+			AND iit.transactionTypeSageFk;
 
-	IF vHasDistinctTransactions > 1 THEN 
+	IF vDistinctTransactions > 1 THEN 
 		CALL util.throw ('This invoice does not allow different types of transactions');
 	END IF;
 
+	SELECT TRUE INTO vHasRepeatedTransactions
+		FROM invoiceInTax
+		WHERE invoiceInFk = vSelf
+		GROUP BY transactionTypeSageFk
+		HAVING COUNT(transactionTypeSageFk) > 1
+		LIMIT 1;
+
+	IF vHasRepeatedTransactions THEN 
+		CALL util.throw ('This invoice contains repeated types of transactions');
+	END IF;
+
 	CREATE OR REPLACE TEMPORARY TABLE tInvoiceIn
 		ENGINE = MEMORY
 		SELECT ii.bookEntried,