diff --git a/build.gradle b/build.gradle
index ac86de91d47e692c912f5d0df8faaee5c39c0867..5d3de9774dc6156d163546deb03948cc9bc9617c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,6 +17,8 @@ dependencies {
 
         implementation 'org.xerial:sqlite-jdbc:3.36.0.3'
 
+        implementation group: 'com.google.code.gson', name: 'gson', version: '2.7'
+
 	implementation 'org.springframework.boot:spring-boot-starter-web'
 	providedRuntime 'org.springframework.boot:spring-boot-starter-tomcat'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
diff --git a/src/main/java/fr/unistra/sil/erp/back/Config.java b/src/main/java/fr/unistra/sil/erp/back/Config.java
index a3de839753e838bbabe181968c4e89515f554bb6..0fa1b11ac08bda6294b61ed854ee9c844ff4b85e 100644
--- a/src/main/java/fr/unistra/sil/erp/back/Config.java
+++ b/src/main/java/fr/unistra/sil/erp/back/Config.java
@@ -19,4 +19,7 @@ public class Config {
     public static final String MAPPING_GETCATEGORIES = URL_PREFIX +
             "/retrieveCategories";
     
+    public static final String MAPPING_SUBTRANSAC = URL_PREFIX +
+            "/submitTransaction";
+    
 }
diff --git a/src/main/java/fr/unistra/sil/erp/back/api/controller/ApiRetrieveCategoriesController.java b/src/main/java/fr/unistra/sil/erp/back/api/controller/ApiRetrieveCategoriesController.java
index 7e512b5a03cd22f2087dfb17e4f0ac3acd6a962b..369679877448f3bbe56689a75e16752c82f05621 100644
--- a/src/main/java/fr/unistra/sil/erp/back/api/controller/ApiRetrieveCategoriesController.java
+++ b/src/main/java/fr/unistra/sil/erp/back/api/controller/ApiRetrieveCategoriesController.java
@@ -24,6 +24,11 @@ import org.springframework.web.bind.annotation.RestController;
 @RestController
 public class ApiRetrieveCategoriesController {
     
+    /**
+     * Returns the list of categories in JSON format.
+     * @return the HTTP response.
+     * @throws ApiServerErrorException Database failure.
+     */
     @GetMapping(MAPPING_GETCATEGORIES)
     public ResponseEntity<Object> getCategories() throws ApiServerErrorException
     {
diff --git a/src/main/java/fr/unistra/sil/erp/back/api/controller/ApiSubmitTransactionController.java b/src/main/java/fr/unistra/sil/erp/back/api/controller/ApiSubmitTransactionController.java
new file mode 100644
index 0000000000000000000000000000000000000000..761f360c59151607bf1a205ee2341de074803f73
--- /dev/null
+++ b/src/main/java/fr/unistra/sil/erp/back/api/controller/ApiSubmitTransactionController.java
@@ -0,0 +1,29 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package fr.unistra.sil.erp.back.api.controller;
+
+import static fr.unistra.sil.erp.back.Config.MAPPING_SUBTRANSAC;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * REST Controller for submitting transactions.
+ * @author BEAUVAIS ANTOINE
+ */
+@RestController
+public class ApiSubmitTransactionController {
+    
+    @RequestMapping(value=MAPPING_SUBTRANSAC, method = RequestMethod.POST)
+    public ResponseEntity<Object> submitTransaction(HttpServletRequest request,
+            HttpServletResponse response)
+    {
+        throw new UnsupportedOperationException("Not yet supported.");
+    }
+    
+}