diff --git a/back/methods/postcode/filter.js b/back/methods/postcode/filter.js
index 8b0f64d97..f350b1ea9 100644
--- a/back/methods/postcode/filter.js
+++ b/back/methods/postcode/filter.js
@@ -11,13 +11,6 @@ module.exports = Self => {
                 arg: 'filter',
                 type: 'object',
                 description: 'Filter defining where, order, offset, and limit - must be a JSON-encoded string',
-                http: {source: 'query'}
-            },
-            {
-                arg: 'search',
-                type: 'string',
-                description: 'Value to filter',
-                http: {source: 'query'}
             },
         ],
         returns: {
@@ -29,13 +22,11 @@ module.exports = Self => {
             verb: 'GET',
         },
     });
-    Self.filter = async(ctx, filter, options) => {
+    Self.filter = async(filter = {}, options) => {
         const myOptions = {};
         if (typeof options == 'object')
             Object.assign(myOptions, options);
 
-        filter = ctx?.filter ?? {};
-
         const conn = Self.dataSource.connector;
         const where = buildFilter(filter?.where, (param, value) => {
             switch (param) {
@@ -50,31 +41,33 @@ module.exports = Self => {
                 };
             }
         }) ?? {};
-        delete ctx.filter.where;
+        delete filter.where;
 
         const stmts = [];
         let stmt;
         stmt = new ParameterizedSQL(`
-        SELECT
-            pc.townFk,
-            t.provinceFk,
-            p.countryFk,
-            pc.code,
-            t.name as town,
-            p.name as province,
-            c.name country
-        FROM
-            postCode pc
-            JOIN town t on t.id = pc.townFk
-            JOIN province p on p.id = t.provinceFk
-            JOIN country c on c.id = p.countryFk
+            SELECT
+                pc.townFk,
+                t.provinceFk,
+                p.countryFk,
+                pc.code,
+                t.name as town,
+                p.name as province,
+                c.name country
+            FROM
+                postCode pc
+                JOIN town t on t.id = pc.townFk
+                JOIN province p on p.id = t.provinceFk
+                JOIN country c on c.id = p.countryFk
         `);
 
-        stmt.merge(conn.makeSuffix({where, ...ctx}));
+        stmt.merge(conn.makeSuffix({where}));
+        stmt.merge(conn.makeLimit(filter));
         const itemsIndex = stmts.push(stmt) - 1;
 
         const sql = ParameterizedSQL.join(stmts, ';');
         const result = await conn.executeStmt(sql, myOptions);
+
         return itemsIndex === 0 ? result : result[itemsIndex];
     };
 };
diff --git a/back/methods/postcode/specs/filter.spec.js b/back/methods/postcode/specs/filter.spec.js
index 60ac24809..abf450a19 100644
--- a/back/methods/postcode/specs/filter.spec.js
+++ b/back/methods/postcode/specs/filter.spec.js
@@ -6,12 +6,9 @@ describe('Postcode filter()', () => {
         const options = {transaction: tx};
 
         try {
-            const ctx = {
-                filter: {
-                },
+            const results = await models.Postcode.filter({
                 limit: 1
-            };
-            const results = await models.Postcode.filter(ctx, options);
+            }, options);
 
             expect(results.length).toEqual(1);
             await tx.rollback();
@@ -26,14 +23,11 @@ describe('Postcode filter()', () => {
         const options = {transaction: tx};
 
         try {
-            const ctx = {
-                filter: {
-                    where: {
-                        search: 46,
-                    }
-                },
-            };
-            const results = await models.Postcode.filter(ctx, options);
+            const results = await models.Postcode.filter({
+                where: {
+                    search: 46,
+                }
+            }, options);
 
             expect(results.length).toEqual(4);
             await tx.rollback();
@@ -48,14 +42,9 @@ describe('Postcode filter()', () => {
         const options = {transaction: tx};
 
         try {
-            const ctx = {
-                filter: {
-                    where: {
-                        search: 'Alz',
-                    }
-                },
-            };
-            const results = await models.Postcode.filter(ctx, options);
+            const results = await models.Postcode.filter({where: {
+                search: 'Alz',
+            }}, options);
 
             expect(results.length).toEqual(1);
             await tx.rollback();
@@ -70,14 +59,9 @@ describe('Postcode filter()', () => {
         const options = {transaction: tx};
 
         try {
-            const ctx = {
-                filter: {
-                    where: {
-                        search: 'one',
-                    }
-                },
-            };
-            const results = await models.Postcode.filter(ctx, options);
+            const results = await models.Postcode.filter({where: {
+                search: 'one',
+            }}, options);
 
             expect(results.length).toEqual(4);
             await tx.rollback();
@@ -92,14 +76,11 @@ describe('Postcode filter()', () => {
         const options = {transaction: tx};
 
         try {
-            const ctx = {
-                filter: {
-                    where: {
-                        search: 'Ec',
-                    }
-                },
-            };
-            const results = await models.Postcode.filter(ctx, options);
+            const results = await models.Postcode.filter({
+                where: {
+                    search: 'Ec',
+                }
+            }, options);
 
             expect(results.length).toEqual(1);
             await tx.rollback();
diff --git a/back/models/postcode.json b/back/models/postcode.json
index eadc2c86c..bad6be5d7 100644
--- a/back/models/postcode.json
+++ b/back/models/postcode.json
@@ -9,7 +9,8 @@
 	"properties": {
 		"code": {
 			"id": true,
-			"type": "string"
+			"type": "string",
+            "required": true
 		}
 	},
 	"relations": {
@@ -47,4 +48,4 @@
 			}
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/back/models/town.json b/back/models/town.json
index 4ad729791..e5d39314b 100644
--- a/back/models/town.json
+++ b/back/models/town.json
@@ -12,7 +12,8 @@
 			"type": "number"
 		},
 		"name": {
-			"type": "string"
+			"type": "string",
+            "required": true
 		}
 	},
 	"relations": {
@@ -54,4 +55,4 @@
 			"fields": ["id", "name", "provinceFk"]
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/loopback/locale/en.json b/loopback/locale/en.json
index 382a2824c..06538a524 100644
--- a/loopback/locale/en.json
+++ b/loopback/locale/en.json
@@ -233,5 +233,7 @@
 	"It has been invoiced but the PDF could not be generated": "It has been invoiced but the PDF could not be generated",
 	"It has been invoiced but the PDF of refund not be generated": "It has been invoiced but the PDF of refund not be generated",
 	"Cannot add holidays on this day": "Cannot add holidays on this day",
-	"Cannot send mail": "Cannot send mail"
+	"Cannot send mail": "Cannot send mail",
+	"CONSTRAINT `chkParkingCodeFormat` failed for `vn`.`parking`": "CONSTRAINT `chkParkingCodeFormat` failed for `vn`.`parking`",
+	"This postcode already exists": "This postcode already exists"
 }
\ No newline at end of file