diff --git a/common/model/src/main/resources/model_validation.xsd b/common/model/src/main/resources/model_validation.xsd
index 37d37b755a..7dbb2956d6 100644
--- a/common/model/src/main/resources/model_validation.xsd
+++ b/common/model/src/main/resources/model_validation.xsd
@@ -2312,7 +2312,7 @@
 					<xs:element name="besluitdeskundige" minOccurs="0">
 						<xs:simpleType>
 							<xs:restriction base="xs:string">
-								<xs:maxLength value="2500" />
+								<xs:maxLength value="5000" />
 							</xs:restriction>
 						</xs:simpleType>
 					</xs:element>
@@ -3145,6 +3145,7 @@
 	</xs:simpleType>
 	<xs:simpleType name="achillesType">
 		<xs:restriction base="xs:string">
+			<xs:enumeration value="Achilles niet van toepassing (enkel monitoring)" />
 			<xs:enumeration value="Zorgsysteem" />
 			<xs:enumeration value="Preventiesysteem" />
 		</xs:restriction>