diff --git a/readme.md b/readme.md
index df70766..41688e8 100644
--- a/readme.md
+++ b/readme.md
@@ -419,15 +419,17 @@ Payment information for an invoice
 
 ### Fields
 
-|Name|Type|Required|Description|
-|----|----|--------|-----------|
-|paymentId|String|yes|Unique id to reference the payment with third party|
-|paymentStatus|String|yes|A status a given payment is in. ISO20022 payment statuses can be used|
-|paymentTime|ZonedDateTime|yes|When the payment is done|
-|debtorAccount|String|yes|The debtor account for the payment. Exactly 11 digits|
-|debtorAccountName|String|no|Optional name of the account|
-|paymentChannel|String|yes|Name the third party performing the payment|
-|paymentBank|[Bank](#invoicepaymentbank)|yes|The bank payment is registered with|
+| Name                  | Type                        | Required | Description                                                                 |
+|-----------------------|-----------------------------|----------|-----------------------------------------------------------------------------|
+| paymentId             | String                      | yes      | Unique id to reference the payment with third party                         |
+| paymentStatus         | String                      | yes      | A status a given payment is in. ISO20022 payment statuses can be used       |
+| paymentTime           | ZonedDateTime               | yes      | When the payment is done                                                    |
+| debtorAccount         | String                      | no       | The debtor account for the payment. Exactly 11 digits                       |
+| debtorAccountName     | String                      | no       | Optional name of the account                                                |
+| paymentChannel        | String                      | yes      | Name the third party performing the payment                                 |
+| paymentBank           | [Bank](#invoicepaymentbank) | no       | The bank payment is registered with                                         |
+| paymentScheduledDate  | LocalDate                   | no       | When the payment is scheduled to be paid                                    |
+| remittanceInformation | String                      | no       | Optional reference number user inputted when invoice was missing KID number |
 
 ### InvoicePayment.Bank
 
diff --git a/src/main/java/no/digipost/api/datatypes/marshalling/LocalDateXmlAdapter.java b/src/main/java/no/digipost/api/datatypes/marshalling/LocalDateXmlAdapter.java
new file mode 100644
index 0000000..c89485a
--- /dev/null
+++ b/src/main/java/no/digipost/api/datatypes/marshalling/LocalDateXmlAdapter.java
@@ -0,0 +1,23 @@
+package no.digipost.api.datatypes.marshalling;
+
+import jakarta.xml.bind.annotation.adapters.XmlAdapter;
+
+import java.time.LocalDate;
+public class LocalDateXmlAdapter extends XmlAdapter<String, LocalDate> {
+    @Override
+    public String marshal(LocalDate v) {
+        if (v == null) {
+            return null;
+        }
+        return v.toString();
+    }
+
+    @Override
+    public LocalDate unmarshal(final String s) {
+        if (s == null) {
+            return null;
+        }
+        return LocalDate.parse(s);
+    }
+
+}
diff --git a/src/main/java/no/digipost/api/datatypes/types/invoice/InvoicePayment.java b/src/main/java/no/digipost/api/datatypes/types/invoice/InvoicePayment.java
index ecbe4bb..66fc7a7 100644
--- a/src/main/java/no/digipost/api/datatypes/types/invoice/InvoicePayment.java
+++ b/src/main/java/no/digipost/api/datatypes/types/invoice/InvoicePayment.java
@@ -1,6 +1,5 @@
 package no.digipost.api.datatypes.types.invoice;
 
-import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Size;
 import jakarta.xml.bind.annotation.XmlElement;
 import jakarta.xml.bind.annotation.XmlRootElement;
@@ -13,6 +12,7 @@
 import no.digipost.api.datatypes.DataType;
 import no.digipost.api.datatypes.documentation.Description;
 
+import java.time.LocalDate;
 import java.time.ZoneId;
 import java.time.ZonedDateTime;
 
@@ -37,7 +37,7 @@ public class InvoicePayment implements DataType {
     @Description("When the payment is done")
     ZonedDateTime paymentTime;
 
-    @XmlElement(required = true, name = "debtor-account")
+    @XmlElement(name = "debtor-account")
     @Description("The debtor account for the payment. Exactly 11 digits")
     @Size(min = 11, max = 11)
     String debtorAccount;
@@ -50,11 +50,18 @@ public class InvoicePayment implements DataType {
     @Description("Name the third party performing the payment")
     String paymentChannel;
 
-    @XmlElement(required = true, name = "payment-bank")
+    @XmlElement(name = "payment-bank")
     @Description("The bank payment is registered with")
-    @NotNull
     Bank paymentBank;
 
+    @XmlElement(name = "payment-scheduled-date")
+    @Description("The date the payment is scheduled for")
+    LocalDate paymentScheduledDate;
+
+    @XmlElement(name = "remittance-information")
+    @Description("The reference-number user has entered when paying the invoice for missing KID")
+    String referenceNumber;
+
     public static final InvoicePayment EXAMPLE = new InvoicePayment(
             "33aa4572ac1c61d807345c5968ab1fbd"
             , "PDNG"
@@ -63,5 +70,7 @@ public class InvoicePayment implements DataType {
             , null
             , "My pay app"
             , Bank.EXAMPLE
+            , LocalDate.of(2020, 10, 1)
+            , "123123123"
     );
 }
diff --git a/src/main/java/no/digipost/api/datatypes/types/invoice/package-info.java b/src/main/java/no/digipost/api/datatypes/types/invoice/package-info.java
index ca81512..3b6c8ba 100644
--- a/src/main/java/no/digipost/api/datatypes/types/invoice/package-info.java
+++ b/src/main/java/no/digipost/api/datatypes/types/invoice/package-info.java
@@ -1,6 +1,9 @@
 @XmlSchema(namespace = DIGIPOST_DATATYPES_NAMESPACE, elementFormDefault = jakarta.xml.bind.annotation.XmlNsForm.QUALIFIED)
 @XmlAccessorType(XmlAccessType.FIELD)
-@XmlJavaTypeAdapter(ZonedDateTimeXmlAdapter.class)
+@XmlJavaTypeAdapters({
+        @XmlJavaTypeAdapter(ZonedDateTimeXmlAdapter.class),
+        @XmlJavaTypeAdapter(LocalDateXmlAdapter.class)
+})
 @DataTypePackage
 package no.digipost.api.datatypes.types.invoice;
 
@@ -8,7 +11,9 @@
 import jakarta.xml.bind.annotation.XmlAccessorType;
 import jakarta.xml.bind.annotation.XmlSchema;
 import jakarta.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
+import jakarta.xml.bind.annotation.adapters.XmlJavaTypeAdapters;
 import no.digipost.api.datatypes.documentation.DataTypePackage;
+import no.digipost.api.datatypes.marshalling.LocalDateXmlAdapter;
 import no.digipost.api.datatypes.marshalling.ZonedDateTimeXmlAdapter;
 
 import static no.digipost.api.datatypes.marshalling.DataTypesJAXBContext.DIGIPOST_DATATYPES_NAMESPACE;