diff --git a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/controller/ITransformerCTL.java b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/controller/ITransformerCTL.java
index 6357fe6..dd0ab61 100644
--- a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/controller/ITransformerCTL.java
+++ b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/controller/ITransformerCTL.java
@@ -27,6 +27,7 @@
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.dto.TransformResDTO;
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.dto.error.base.ErrorResponseDTO;
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.enums.BundleTypeEnum;
+import it.finanze.sanita.fse2.gtwfhirmappingenginems.enums.GtwOperationEnum;
 import org.bson.Document;
 import org.springframework.http.MediaType;
 import org.springframework.web.bind.annotation.*;
@@ -69,6 +70,8 @@ Document convertCDAToBundleStateless(
 			String objectId,
 			@RequestParam(value = API_QP_BUNDLE_TYPE, required = false)
 			BundleTypeEnum type,
+			@RequestParam(value = API_QP_OP_TYPE)
+			GtwOperationEnum op,
 			@RequestPart(API_FILE_VAR)
 			MultipartFile file
 	) throws IOException;
diff --git a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/controller/impl/TransformerCTL.java b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/controller/impl/TransformerCTL.java
index 3ae2e9f..f2e6fe6 100644
--- a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/controller/impl/TransformerCTL.java
+++ b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/controller/impl/TransformerCTL.java
@@ -21,6 +21,7 @@
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.dto.FhirResourceDTO;
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.dto.TransformResDTO;
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.enums.BundleTypeEnum;
+import it.finanze.sanita.fse2.gtwfhirmappingenginems.enums.GtwOperationEnum;
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.exception.BusinessException;
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.service.IConverterSRV;
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.service.ITransformerSRV;
@@ -79,11 +80,11 @@ public TransformResDTO convertCDAToBundle(FhirResourceDTO dto, HttpServletReques
 	}
 	
 	@Override
-	public Document convertCDAToBundleStateless(String engineId, String objectId, BundleTypeEnum type, MultipartFile file) throws IOException {
+	public Document convertCDAToBundleStateless(String engineId, String objectId, BundleTypeEnum type, GtwOperationEnum op, MultipartFile file) throws IOException {
 		log.debug("Invoked transform controller");
 		if(type == null) type = TRANSACTION;
 		String transaction = service.transform(getCDA(file), engineId, objectId, null);
-		Document doc = converter.convert(type, transaction);
+		Document doc = converter.convert(type, op, transaction);
 		log.debug("Conversion of CDA completed");
 		return doc;
 	}
diff --git a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/enums/GtwOperationEnum.java b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/enums/GtwOperationEnum.java
new file mode 100644
index 0000000..7335bde
--- /dev/null
+++ b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/enums/GtwOperationEnum.java
@@ -0,0 +1,8 @@
+package it.finanze.sanita.fse2.gtwfhirmappingenginems.enums;
+
+public enum GtwOperationEnum {
+    CREATE,
+    REPLACE,
+    UPDATE,
+    DELETE
+}
diff --git a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/service/IConverterSRV.java b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/service/IConverterSRV.java
index c912a74..edc8d4c 100644
--- a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/service/IConverterSRV.java
+++ b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/service/IConverterSRV.java
@@ -1,10 +1,11 @@
 package it.finanze.sanita.fse2.gtwfhirmappingenginems.service;
 
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.enums.BundleTypeEnum;
+import it.finanze.sanita.fse2.gtwfhirmappingenginems.enums.GtwOperationEnum;
 import org.bson.Document;
 
 public interface IConverterSRV {
-    Document convert(BundleTypeEnum type, String transaction);
+    Document convert(BundleTypeEnum type, GtwOperationEnum op, String transaction);
     String toMessage(String transaction);
-    String toDocument(String transaction);
+    String toDocument(String transaction, GtwOperationEnum op);
 }
diff --git a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/service/impl/ConverterSRV.java b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/service/impl/ConverterSRV.java
index 9540105..f743a3a 100644
--- a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/service/impl/ConverterSRV.java
+++ b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/service/impl/ConverterSRV.java
@@ -1,6 +1,7 @@
 package it.finanze.sanita.fse2.gtwfhirmappingenginems.service.impl;
 
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.enums.BundleTypeEnum;
+import it.finanze.sanita.fse2.gtwfhirmappingenginems.enums.GtwOperationEnum;
 import it.finanze.sanita.fse2.gtwfhirmappingenginems.service.IConverterSRV;
 import org.apache.commons.lang3.StringUtils;
 import org.bson.Document;
@@ -15,10 +16,12 @@
 public class ConverterSRV implements IConverterSRV {
 
     @Override
-    public Document convert(BundleTypeEnum type, String transaction) {
+    public Document convert(BundleTypeEnum type, GtwOperationEnum op, String transaction) {
         String bundle = transaction;
         switch (type) {
             case DOCUMENT:
+                bundle = toDocument(transaction, op);
+                break;
             case MESSAGE:
                 bundle = toMessage(transaction);
                 break;
@@ -53,7 +56,7 @@ public String toMessage(String transaction) {
     }
 
     @Override
-    public String toDocument(String transaction) {
+    public String toDocument(String transaction, GtwOperationEnum op) {
         return null;
     }
 
diff --git a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/utility/RouteUtility.java b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/utility/RouteUtility.java
index 691b9c8..659ced8 100644
--- a/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/utility/RouteUtility.java
+++ b/src/main/java/it/finanze/sanita/fse2/gtwfhirmappingenginems/utility/RouteUtility.java
@@ -30,6 +30,7 @@ private RouteUtility() {}
     public static final String API_FILE_VAR = "file";
     public static final String API_ENGINE_ID_VAR = "engineId";
     public static final String API_QP_BUNDLE_TYPE = "type";
+    public static final String API_QP_OP_TYPE = "op";
     public static final String API_ENGINE_ID_PATH_VAR = "{" + API_ENGINE_ID_VAR + "}" ;
     public static final String API_OBJECT_ID_VAR = "objectId";
     public static final String API_OBJECT_ID_PATH_VAR = "{" + API_OBJECT_ID_VAR + "}" ;