diff --git a/back/methods/collection/addItem.js b/back/methods/collection/addItem.js
new file mode 100644
index 000000000..4538a479c
--- /dev/null
+++ b/back/methods/collection/addItem.js
@@ -0,0 +1,60 @@
+const UserError = require('vn-loopback/util/user-error');
+module.exports = Self => {
+    Self.remoteMethodCtx('addItem', {
+        description: 'Add a collection',
+        accessType: 'WRITE',
+        accepts: [
+            {
+                arg: 'code',
+                type: 'string',
+                required: true
+            },
+            {
+                arg: 'quantity',
+                type: 'number',
+                required: true
+            },
+            {
+                arg: 'ticketFk',
+                type: 'number',
+                required: true
+            },
+            {
+                arg: 'warehouseFk',
+                type: 'number',
+                required: true
+            },
+        ],
+        http: {
+            path: `/addItem`,
+            verb: 'POST'
+        },
+    });
+
+    Self.addItem = async(ctx, code, quantity, ticketFk, warehouseFk, options) => {
+        const models = Self.app.models;
+        const myOptions = {};
+        let tx;
+
+        if (typeof options == 'object')
+            Object.assign(myOptions, options);
+
+        if (!myOptions.transaction) {
+            tx = await Self.beginTransaction({});
+            myOptions.transaction = tx;
+        }
+
+        try {
+            const [[item]] = await Self.rawSql('CALL vn.item_getInfo(?,?)', [code, warehouseFk]);
+
+            if (!item.available) throw new UserError('We do not have availability for the selected item');
+
+            await models.Ticket.addSale(ctx, ticketFk, item.id, quantity, myOptions);
+
+            if (tx) await tx.commit();
+        } catch (e) {
+            if (tx) await tx.rollback();
+            throw e;
+        }
+    };
+};
diff --git a/back/models/collection.js b/back/models/collection.js
index a0d34712f..0d5be170b 100644
--- a/back/models/collection.js
+++ b/back/models/collection.js
@@ -5,4 +5,5 @@ module.exports = Self => {
     require('../methods/collection/previousLabel')(Self);
     require('../methods/collection/getTickets')(Self);
     require('../methods/collection/assignCollection')(Self);
+    require('../methods/collection/addItem')(Self);
 };
diff --git a/db/changes/235001/00-newWareHouse.sql b/db/changes/235001/00-newWareHouse.sql
index 57e3398ff..8437d8e15 100644
--- a/db/changes/235001/00-newWareHouse.sql
+++ b/db/changes/235001/00-newWareHouse.sql
@@ -8,4 +8,5 @@ INSERT INTO `salix`.`ACL` (model, property, accessType, permission, principalTyp
         ('SaleTracking','deleteTracking','WRITE','ALLOW','ROLE','employee'),
         ('SaleTracking','updateTracking','WRITE','ALLOW','ROLE','employee'),
         ('SaleTracking','mark','WRITE','ALLOW','ROLE','employee'),
-        ('ItemBarcode','deleteByItemAndCode','WRITE','ALLOW','ROLE','employee');
\ No newline at end of file
+        ('ItemBarcode','deleteByItemAndCode','WRITE','ALLOW','ROLE','employee'),
+        ('Collection','addItem','WRITE','ALLOW','ROLE','employee');
\ No newline at end of file
diff --git a/modules/ticket/back/models/sale.js b/modules/ticket/back/models/sale.js
index 3589eac4b..d6f06d744 100644
--- a/modules/ticket/back/models/sale.js
+++ b/modules/ticket/back/models/sale.js
@@ -71,7 +71,8 @@ module.exports = Self => {
         }, ctx.options);
         if (item.family == 'EMB') return;
 
-        if (await models.ACL.checkAccessAcl(ctx, 'Sale', 'isInPreparing', '*')) return;
+        const isInPreparing = await models.ACL.checkAccessAcl(ctx, 'Sale', 'isInPreparing', '*');
+        if (!ctx.isNEwInstance && isInPreparing) return;
 
         await models.Sale.rawSql(`CALL catalog_calcFromItem(?,?,?,?)`, [
             ticket.landed,
@@ -89,7 +90,7 @@ module.exports = Self => {
 
         if (await models.ACL.checkAccessAcl(ctx, 'Ticket', 'isRoleAdvanced', '*')) return;
 
-        if (newQuantity < item.minQuantity && newQuantity != available)
+        if (newQuantity < item.minQuantity && newQuantity != available && !isInPreparing)
             throw new UserError('The amount cannot be less than the minimum');
 
         if (ctx.isNewInstance || isReduction) return;