change UEN length to 13

README.md

@@ -61,7 +61,7 @@ A entire data message is the combination of data objects, below table shows the
  | ----| ---- | ---- | ---- | ---- |
  | Globally Unique Identifier | 00 | up to 32 | 0009SG.PAYNOW| static value|
  | Account Type | 01 | 01 | 01012 | value 0 for mobile, value 2 for UEN |
- | UEN | 02 | up to 10 |  020812345678 | UEN number |
+ | UEN | 02 | up to 13 |  020812345678 | UEN number takes 10, suffix takes 3 |
  | Payment Amount Editable | 03 | 01 | 1 | value 1 payment is editable, value 0 is not editable |
  | Expiry Date | 04 | 08 | 040820260304 | expire date format YYYYMMDD| 
 

paynow.go

@@ -89,7 +89,7 @@ func getPayNowDataObject(options Options) *RootObject {
 	}
 	uenAccount := DataObject{
 		ID:        "02",
-		MaxLength: 10,
+		MaxLength: 13,
 		Name:      "UEN Account Number",
 		Value:     options.UEN,
 	}

test/generate_test.go

@@ -40,3 +40,15 @@ func TestCompanyNameOutOfLength(t *testing.T) {
 	})
 	t.Log(val)
 }
+
+func TestUENWithSuffix(t *testing.T) {
+	val := paynow.GeneratePayNowString(paynow.Options{
+		UEN:             "123456789001",
+		Editable:        false,
+		Expiry:          "20260304",
+		CompanyName:     "testcompany",
+		Amount:          "0.99",
+		ReferenceNumber: "testordernumber12345678",
+	})
+	t.Log(val)
+}