diff --git a/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFunc.java b/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFunc.java
index 519ff1a..c0ea4d1 100644
--- a/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFunc.java
+++ b/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFunc.java
@@ -17,10 +17,16 @@ public class MapFunc extends AbstractPseudoFunc {
     public MapFunc(PseudoFuncConfig genericConfig) {
         super(genericConfig.getFuncDecl());
         this.config = mapFuncConfigService.resolve(genericConfig);
+        this.mapper = loadMapper();
+        this.mapper.setConfig(genericConfig.asMap());
+    }
+
+    public static Mapper loadMapper() {
         // TODO: Filter Service Implementation by some annotation (to choose the implementation that is used)
-        this.mapper = ServiceLoader.load(Mapper.class)
+        return ServiceLoader.load(Mapper.class)
                 .findFirst()
-                .orElseThrow(() -> new IllegalStateException(getClass().getSimpleName() + " requires a " + Mapper.class.getName() + " implementation to be present on the classpath"));
+                .orElseThrow(() -> new IllegalStateException(MapFunc.class.getSimpleName() + " requires a " +
+                        Mapper.class.getName() + " implementation to be present on the classpath"));
     }
 
     @Override
diff --git a/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFuncConfig.java b/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFuncConfig.java
index a74bebd..c9f28bb 100644
--- a/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFuncConfig.java
+++ b/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFuncConfig.java
@@ -8,9 +8,11 @@
 @Builder
 public class MapFuncConfig {
     private final String context;
+    private final String versionTimestamp;
 
     @UtilityClass
     public static class Param {
         public static final String CONTEXT = "context";
+        public static final String VERSION_TIMESTAMP = "versionTimestamp";
     }
 }
diff --git a/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFuncConfigService.java b/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFuncConfigService.java
index 7d5c5ec..9216399 100644
--- a/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFuncConfigService.java
+++ b/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/MapFuncConfigService.java
@@ -1,14 +1,13 @@
 package no.ssb.dapla.dlp.pseudo.func.map;
-
 import no.ssb.dapla.dlp.pseudo.func.PseudoFuncConfig;
+import static no.ssb.dapla.dlp.pseudo.func.map.MapFuncConfig.Param.VERSION_TIMESTAMP;
 
 public class MapFuncConfigService {
-
     public MapFuncConfig resolve(PseudoFuncConfig genericConfig) {
-
         String context = genericConfig.getRequired(MapFuncConfig.Param.CONTEXT, String.class);
 
         return MapFuncConfig.builder()
+                .versionTimestamp(genericConfig.get(VERSION_TIMESTAMP, String.class).orElse(null))
                 .context(context)
                 .build();
     }
diff --git a/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/Mapper.java b/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/Mapper.java
index 44512bd..360fc30 100644
--- a/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/Mapper.java
+++ b/src/main/java/no/ssb/dapla/dlp/pseudo/func/map/Mapper.java
@@ -1,8 +1,11 @@
 package no.ssb.dapla.dlp.pseudo.func.map;
 
+import java.util.Map;
+
 public interface Mapper {
 
     void init(Object data);
+    void setConfig(Map<String, Object> config);
     Object map(Object data);
 
     Object restore(Object mapped);