diff --git a/pom.xml b/pom.xml
index c942c046..51ec4713 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
     </parent>
 
     <artifactId>digipost-data-types</artifactId>
-    <version>0.28-SNAPSHOT</version>
+    <version>LOCAL-SNAPSHOT</version>
     <name>Digipost Data Types</name>
     <description>Data types for Digipost messages</description>
 
diff --git a/src/main/java/no/digipost/api/datatypes/types/Inkasso.java b/src/main/java/no/digipost/api/datatypes/types/Inkasso.java
index 241c0dd7..1bead773 100644
--- a/src/main/java/no/digipost/api/datatypes/types/Inkasso.java
+++ b/src/main/java/no/digipost/api/datatypes/types/Inkasso.java
@@ -5,8 +5,10 @@
 import lombok.NoArgsConstructor;
 import lombok.Value;
 import lombok.With;
+import no.digipost.api.datatypes.ComplementedBy;
 import no.digipost.api.datatypes.DataType;
 import no.digipost.api.datatypes.documentation.Description;
+import no.digipost.api.datatypes.types.invoice.InvoicePayment;
 
 import javax.validation.constraints.Size;
 import javax.xml.bind.annotation.XmlElement;
@@ -21,6 +23,7 @@
 @NoArgsConstructor(force = true, access = AccessLevel.PRIVATE)
 @With
 @Description("A debt collection payment")
+@ComplementedBy({InvoicePayment.class})
 public class Inkasso implements DataType {
     @XmlElement
     @Description("A link to more information, or further actions that can be taken")
diff --git a/src/test/java/no/digipost/api/datatypes/ComplementByTest.java b/src/test/java/no/digipost/api/datatypes/ComplementByTest.java
index e70992f0..40180524 100644
--- a/src/test/java/no/digipost/api/datatypes/ComplementByTest.java
+++ b/src/test/java/no/digipost/api/datatypes/ComplementByTest.java
@@ -1,6 +1,9 @@
 package no.digipost.api.datatypes;
 
 import no.digipost.api.datatypes.types.Appointment;
+import no.digipost.api.datatypes.types.Inkasso;
+import no.digipost.api.datatypes.types.invoice.Invoice;
+import no.digipost.api.datatypes.types.invoice.InvoicePayment;
 import no.digipost.api.datatypes.types.pickup.PickupNotice;
 import no.digipost.api.datatypes.types.pickup.PickupNoticeStatus;
 import org.junit.jupiter.api.Test;
@@ -32,4 +35,10 @@ void kan_IKKE_complementere_seg_selv_med_mindre_eksplisitt_definert() {
         assertThat(Appointment.EXAMPLE, whereNot(s -> s.getTypeIdentifier().canBeComplementedBy(Appointment.EXAMPLE)));
         assertThat(PickupNotice.EXAMPLE, where(s -> s.getTypeIdentifier().canBeComplementedBy(PickupNotice.EXAMPLE)));
     }
+    
+    @Test
+    void kan_komplementere_fakturadomene() {
+        assertThat(Invoice.EXAMPLE, where(s -> s.getTypeIdentifier().canBeComplementedBy(InvoicePayment.EXAMPLE)));
+        assertThat(Inkasso.EXAMPLE, where(s -> s.getTypeIdentifier().canBeComplementedBy(InvoicePayment.EXAMPLE)));
+    }
 }