diff --git a/back/methods/collection/spec/assign.spec.js b/back/methods/collection/spec/assign.spec.js
index 745343819..b00631d22 100644
--- a/back/methods/collection/spec/assign.spec.js
+++ b/back/methods/collection/spec/assign.spec.js
@@ -28,9 +28,10 @@ describe('ticket assign()', () => {
         await tx.rollback();
     });
 
-    it('should throw an error when  there is not picking tickets', async() => {
+    it('should throw an error when there are no picking tickets', async() => {
         try {
             await models.Collection.assign(ctx, options);
+            fail('Expected an error to be thrown, but none was thrown.');
         } catch (e) {
             expect(e.message).toEqual('There are not picking tickets');
         }
diff --git a/db/routines/vn/procedures/entry_isEditable.sql b/db/routines/vn/procedures/entry_isEditable.sql
index 22cb25ba5..c417f6789 100644
--- a/db/routines/vn/procedures/entry_isEditable.sql
+++ b/db/routines/vn/procedures/entry_isEditable.sql
@@ -9,16 +9,18 @@ BEGIN
  *
  * @param vSelf Id de entrada
  */
-	DECLARE vIsNotEditable BOOL;
+	DECLARE vIsNotEditable BOOL DEFAULT FALSE;
 
-    SELECT (e.typeFk IS NULL OR NOT et.isInformal) INTO vIsNotEditable
+	SELECT TRUE INTO vIsNotEditable
 		FROM `entry` e
 			LEFT JOIN entryType et ON et.code = e.typeFk
 		WHERE e.id = vSelf
-			AND e.isBooked;
+			AND e.isBooked
+			AND (e.typeFk IS NULL OR NOT et.isInformal);
+
+	IF vIsNotEditable AND NOT IFNULL(@isModeInventory, FALSE) THEN
+		CALL util.throw(CONCAT('Entry ', vSelf, ' is not editable'));
+	END IF;
 
-    IF vIsNotEditable AND NOT IFNULL(@isModeInventory, FALSE) THEN
-        CALL util.throw(CONCAT('Entry ', vSelf, ' is not editable'));
-    END IF;
 END$$
 DELIMITER ;
diff --git a/modules/entry/back/models/specs/entry.spec.js b/modules/entry/back/models/specs/entry.spec.js
new file mode 100644
index 000000000..15a8202c4
--- /dev/null
+++ b/modules/entry/back/models/specs/entry.spec.js
@@ -0,0 +1,97 @@
+const {models} = require('vn-loopback/server/server');
+const LoopBackContext = require('loopback-context');
+
+describe('entry_isEditable trigger', () => {
+    const activeCtx = {
+        accessToken: {userId: 5},
+        http: {
+            req: {
+                headers: {origin: 'http://localhost'}
+            }
+        }
+    };
+    const ctx = {req: activeCtx};
+    const entryId = 1;
+    let tx;
+    let options;
+    let entry;
+
+    beforeEach(async() => {
+        spyOn(LoopBackContext, 'getCurrentContext').and.returnValue({active: ctx.req});
+        tx = await models.Entry.beginTransaction({});
+        options = {transaction: tx};
+
+        entry = await models.Entry.findById(entryId, null, options);
+    });
+
+    afterEach(async() => {
+        await tx.rollback();
+    });
+
+    async function prepareEntry(isBooked, typeFk) {
+        let newCreated = Date.vnNew();
+        await entry.updateAttributes({isBooked, typeFk}, options);
+        await entry.updateAttributes({dated: newCreated}, options);
+    }
+
+    it('should throw an error when entry is booked and typeFk is null', async() => {
+        let error;
+        try {
+            await prepareEntry(true, null);
+        } catch (e) {
+            error = e;
+        }
+
+        expect(error.message).toContain(`Entry ${entryId} is not editable`);
+    });
+
+    it('should throw an error when entry is booked and typeFk is not informal', async() => {
+        let error;
+        try {
+            const type = await models.EntryType.findOne({where: {isInformal: false}}, options);
+            await prepareEntry(true, type.code);
+        } catch (e) {
+            error = e;
+        }
+
+        expect(error.message).toContain(`Entry ${entryId} is not editable`);
+    });
+
+    it('should not throw an error when entry is booked and typeFk is informal', async() => {
+        let error;
+        try {
+            const type = await models.EntryType.findOne({where: {isInformal: true}}, options);
+            await prepareEntry(true, type.code);
+        } catch (e) {
+            error = e;
+        }
+
+        expect(error).toBeUndefined();
+    });
+
+    it('should not throw an error when entry is not booked', async() => {
+        let error;
+        try {
+            const type = await models.EntryType.findOne({}, options);
+            await prepareEntry(false, type.code);
+        } catch (e) {
+            error = e;
+        }
+
+        expect(error).toBeUndefined();
+    });
+
+    it('should not throw an error when @isModeInventory is true', async() => {
+        let error;
+        try {
+            await models.Application.rawSql('SET @isModeInventory = TRUE;', null, options);
+            await prepareEntry(true, null);
+        } catch (e) {
+            error = e;
+        } finally {
+            await models.Application.rawSql('SET @isModeInventory = FALSE;', null, options);
+        }
+
+        expect(error).toBeUndefined();
+    });
+});