diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceItemRepository/GetListTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceItemRepository/GetListTest.php
index b45ac4453205..6616c02752a8 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceItemRepository/GetListTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceItemRepository/GetListTest.php
@@ -19,7 +19,7 @@ class GetListTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source-item';
+    const RESOURCE_PATH = '/V1/inventory/source-items';
     const SERVICE_NAME = 'inventoryApiSourceItemRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceItemsDeleteTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceItemsDeleteTest.php
index 93e1228e9664..d9e51356a080 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceItemsDeleteTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceItemsDeleteTest.php
@@ -18,8 +18,8 @@ class SourceItemsDeleteTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
+    const RESOURCE_PATH = '/V1/inventory/source-items';
     const RESOURCE_DELETE_PATH = '/V1/inventory/source-items-delete';
-    const RESOURCE_PATH = '/V1/inventory/source-item';
     const SERVICE_NAME = 'inventoryApiSourceItemsDeleteV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceItemsSave/SaveTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceItemsSave/SaveTest.php
index d0546f361b57..16cf85118e02 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceItemsSave/SaveTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceItemsSave/SaveTest.php
@@ -18,7 +18,7 @@ class SaveTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source-item';
+    const RESOURCE_PATH = '/V1/inventory/source-items';
     const SERVICE_NAME_SAVE = 'inventoryApiSourceItemsSaveV1';
     const SERVICE_NAME_DELETE = 'inventoryApiSourceItemsDeleteV1';
     /**#@-*/
diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceItemsSave/ValidationTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceItemsSave/ValidationTest.php
index 760705fefa2f..19301c76183e 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceItemsSave/ValidationTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceItemsSave/ValidationTest.php
@@ -17,7 +17,7 @@ class ValidationTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source-item';
+    const RESOURCE_PATH = '/V1/inventory/source-items';
     const SERVICE_NAME = 'inventoryApiSourceItemsSaveV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/CarrierLinkManagementTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/CarrierLinkManagementTest.php
index 1c5f794ab5cd..e5d5f460c9aa 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/CarrierLinkManagementTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/CarrierLinkManagementTest.php
@@ -17,7 +17,7 @@ class CarrierLinkManagementTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source';
+    const RESOURCE_PATH = '/V1/inventory/sources';
     const SERVICE_NAME = 'inventoryApiSourceRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/CreateTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/CreateTest.php
index 7862c13da315..1a880d9b39cc 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/CreateTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/CreateTest.php
@@ -20,7 +20,7 @@ class CreateTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source';
+    const RESOURCE_PATH = '/V1/inventory/sources';
     const SERVICE_NAME = 'inventoryApiSourceRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/GetListTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/GetListTest.php
index b6da46458cc3..063ff81e6835 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/GetListTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/GetListTest.php
@@ -19,7 +19,7 @@ class GetListTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source';
+    const RESOURCE_PATH = '/V1/inventory/sources';
     const SERVICE_NAME = 'inventoryApiSourceRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/GetTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/GetTest.php
index 4a4d6463df6c..6cc344ef81e4 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/GetTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/GetTest.php
@@ -20,7 +20,7 @@ class GetTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source';
+    const RESOURCE_PATH = '/V1/inventory/sources';
     const SERVICE_NAME = 'inventoryApiSourceRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/RegionProcessingTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/RegionProcessingTest.php
index a7ffc1959a26..ca702fd30686 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/RegionProcessingTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/RegionProcessingTest.php
@@ -18,7 +18,7 @@ class RegionProcessingTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source';
+    const RESOURCE_PATH = '/V1/inventory/sources';
     const SERVICE_NAME = 'inventoryApiSourceRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/UpdateTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/UpdateTest.php
index 3217deff05e8..d14572094ba1 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/UpdateTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/UpdateTest.php
@@ -18,7 +18,7 @@ class UpdateTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source';
+    const RESOURCE_PATH = '/V1/inventory/sources';
     const SERVICE_NAME = 'inventoryApiSourceRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/ValidationTest.php b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/ValidationTest.php
index 4c39bc61eda6..73036fff1472 100644
--- a/app/code/Magento/InventoryApi/Test/Api/SourceRepository/ValidationTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/SourceRepository/ValidationTest.php
@@ -17,7 +17,7 @@ class ValidationTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source';
+    const RESOURCE_PATH = '/V1/inventory/sources';
     const SERVICE_NAME = 'inventoryApiSourceRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/StockRepository/CreateTest.php b/app/code/Magento/InventoryApi/Test/Api/StockRepository/CreateTest.php
index 86f1414dd7e9..68d675fcb394 100644
--- a/app/code/Magento/InventoryApi/Test/Api/StockRepository/CreateTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/StockRepository/CreateTest.php
@@ -19,7 +19,7 @@ class CreateTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/stock';
+    const RESOURCE_PATH = '/V1/inventory/stocks';
     const SERVICE_NAME = 'inventoryApiStockRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/StockRepository/DeleteTest.php b/app/code/Magento/InventoryApi/Test/Api/StockRepository/DeleteTest.php
index 10388543ab94..03e74ad6d8bc 100644
--- a/app/code/Magento/InventoryApi/Test/Api/StockRepository/DeleteTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/StockRepository/DeleteTest.php
@@ -16,7 +16,7 @@ class DeleteTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/stock';
+    const RESOURCE_PATH = '/V1/inventory/stocks';
     const SERVICE_NAME = 'inventoryApiStockRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/StockRepository/GetListTest.php b/app/code/Magento/InventoryApi/Test/Api/StockRepository/GetListTest.php
index a372f83f5576..2fc305ed324b 100644
--- a/app/code/Magento/InventoryApi/Test/Api/StockRepository/GetListTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/StockRepository/GetListTest.php
@@ -19,7 +19,7 @@ class GetListTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/stock';
+    const RESOURCE_PATH = '/V1/inventory/stocks';
     const SERVICE_NAME = 'inventoryApiStockRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/StockRepository/GetTest.php b/app/code/Magento/InventoryApi/Test/Api/StockRepository/GetTest.php
index e41e9dc172c8..3eb8e943e6c9 100644
--- a/app/code/Magento/InventoryApi/Test/Api/StockRepository/GetTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/StockRepository/GetTest.php
@@ -20,7 +20,7 @@ class GetTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/stock';
+    const RESOURCE_PATH = '/V1/inventory/stocks';
     const SERVICE_NAME = 'inventoryApiStockRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/StockRepository/UpdateTest.php b/app/code/Magento/InventoryApi/Test/Api/StockRepository/UpdateTest.php
index 5eb835494fe4..c6d7d75d7e3c 100644
--- a/app/code/Magento/InventoryApi/Test/Api/StockRepository/UpdateTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/StockRepository/UpdateTest.php
@@ -17,7 +17,7 @@ class UpdateTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/stock';
+    const RESOURCE_PATH = '/V1/inventory/stocks';
     const SERVICE_NAME = 'inventoryApiStockRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/StockRepository/ValidationTest.php b/app/code/Magento/InventoryApi/Test/Api/StockRepository/ValidationTest.php
index 89783ebffd10..bab7d5ce0c2a 100644
--- a/app/code/Magento/InventoryApi/Test/Api/StockRepository/ValidationTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/StockRepository/ValidationTest.php
@@ -17,7 +17,7 @@ class ValidationTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/stock';
+    const RESOURCE_PATH = '/V1/inventory/stocks';
     const SERVICE_NAME = 'inventoryApiStockRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/GetStockSourceLinksTest.php b/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/GetStockSourceLinksTest.php
index 7b256e2cf5d2..205d92f9ae16 100644
--- a/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/GetStockSourceLinksTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/GetStockSourceLinksTest.php
@@ -19,7 +19,7 @@ class GetStockSourceLinksTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/stock-source-link';
+    const RESOURCE_PATH = '/V1/inventory/stock-source-links';
     const SERVICE_NAME = 'inventoryApiGetStockSourceLinksV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/StockSourceLinksDeleteTest.php b/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/StockSourceLinksDeleteTest.php
index 9d9c78b27031..97e011695b64 100644
--- a/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/StockSourceLinksDeleteTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/StockSourceLinksDeleteTest.php
@@ -18,8 +18,9 @@ class StockSourceLinksDeleteTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/stock-source-link';
+    const RESOURCE_PATH = '/V1/inventory/stock-source-links';
     const RESOURCE_DELETE_PATH = '/V1/inventory/stock-source-links-delete';
+
     const SERVICE_NAME_SAVE = 'inventoryApiStockSourceLinksSaveV1';
     const SERVICE_NAME_DELETE = 'inventoryApiStockSourceLinksDeleteV1';
     const SERVICE_NAME_GET_LIST = 'inventoryApiGetStockSourceLinksV1';
diff --git a/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/StockSourceLinksSaveTest.php b/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/StockSourceLinksSaveTest.php
index 1f0e672cdbd0..3c12d1c24ae9 100644
--- a/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/StockSourceLinksSaveTest.php
+++ b/app/code/Magento/InventoryApi/Test/Api/StockSourceLink/StockSourceLinksSaveTest.php
@@ -18,7 +18,7 @@ class StockSourceLinksSaveTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/stock-source-link';
+    const RESOURCE_PATH = '/V1/inventory/stock-source-links';
     const SERVICE_NAME_SAVE = 'inventoryApiStockSourceLinksSaveV1';
     const SERVICE_NAME_DELETE = 'inventoryApiStockSourceLinksDeleteV1';
     const SERVICE_NAME_GET_LIST = 'inventoryApiGetStockSourceLinksV1';
diff --git a/app/code/Magento/InventoryApi/Test/Mftf/Metadata/source-meta.xml b/app/code/Magento/InventoryApi/Test/Mftf/Metadata/source-meta.xml
index 01de3a6bc5c4..bb529560ab93 100644
--- a/app/code/Magento/InventoryApi/Test/Mftf/Metadata/source-meta.xml
+++ b/app/code/Magento/InventoryApi/Test/Mftf/Metadata/source-meta.xml
@@ -9,7 +9,7 @@
 <operations xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:noNamespaceSchemaLocation="../../../../../../../dev/tests/acceptance/vendor/magento/magento2-functional-testing-framework/src/Magento/FunctionalTestingFramework/DataGenerator/etc/dataOperation.xsd">
     <operation name="CreateSource" dataType="source" type="create"
-               auth="adminOauth" url="/V1/inventory/source" method="POST">
+               auth="adminOauth" url="/V1/inventory/sources" method="POST">
         <contentType>application/json</contentType>
         <object dataType="source" key="source">
             <field key="source_code">string</field>
@@ -32,7 +32,7 @@
         </object>
     </operation>
     <operation name="DeleteSource" dataType="source" type="delete"
-               auth="adminOauth" url="/V1/inventory/source/{source_code}" method="DELETE">
+               auth="adminOauth" url="/V1/inventory/sources/{source_code}" method="DELETE">
         <contentType>application/json</contentType>
     </operation>
 </operations>
diff --git a/app/code/Magento/InventoryApi/Test/Mftf/Metadata/stock-meta.xml b/app/code/Magento/InventoryApi/Test/Mftf/Metadata/stock-meta.xml
index 45a01d48212c..ac011fc4a3f8 100644
--- a/app/code/Magento/InventoryApi/Test/Mftf/Metadata/stock-meta.xml
+++ b/app/code/Magento/InventoryApi/Test/Mftf/Metadata/stock-meta.xml
@@ -9,7 +9,7 @@
 <operations xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:noNamespaceSchemaLocation="../../../../../../../dev/tests/acceptance/vendor/magento/magento2-functional-testing-framework/src/Magento/FunctionalTestingFramework/DataGenerator/etc/dataOperation.xsd">
     <operation name="CreateStock" dataType="stock" type="create"
-               auth="adminOauth" url="/V1/inventory/stock" method="POST">
+               auth="adminOauth" url="/V1/inventory/stocks" method="POST">
         <contentType>application/json</contentType>
         <object dataType="stock" key="stock">
             <field key="stock_id">integer</field>
@@ -25,7 +25,7 @@
         </object>
     </operation>
     <operation name="DeleteStock" dataType="stock" type="delete"
-               auth="adminOauth" url="/V1/inventory/stock/{return}" method="DELETE">
+               auth="adminOauth" url="/V1/inventory/stocks/{return}" method="DELETE">
         <contentType>application/json</contentType>
     </operation>
 </operations>
diff --git a/app/code/Magento/InventoryApi/Test/Mftf/Metadata/stock-source-link-meta.xml b/app/code/Magento/InventoryApi/Test/Mftf/Metadata/stock-source-link-meta.xml
index de1593b558aa..40e582967426 100644
--- a/app/code/Magento/InventoryApi/Test/Mftf/Metadata/stock-source-link-meta.xml
+++ b/app/code/Magento/InventoryApi/Test/Mftf/Metadata/stock-source-link-meta.xml
@@ -8,7 +8,7 @@
 
 <operations xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:noNamespaceSchemaLocation="../../../../../../../dev/tests/acceptance/vendor/magento/magento2-functional-testing-framework/src/Magento/FunctionalTestingFramework/DataGenerator/etc/dataOperation.xsd">
-    <operation name="LinksSourceStock" dataType="source-stock-links" type="create" auth="adminOauth" url="/V1/inventory/stock-source-link" method="POST">
+    <operation name="LinksSourceStock" dataType="source-stock-links" type="create" auth="adminOauth" url="/V1/inventory/stock-source-links" method="POST">
         <contentType>application/json</contentType>
         <array key="links">
             <value>source-stock-link</value>
diff --git a/app/code/Magento/InventoryApi/etc/webapi.xml b/app/code/Magento/InventoryApi/etc/webapi.xml
index 415464a1586e..1a3f96081f41 100644
--- a/app/code/Magento/InventoryApi/etc/webapi.xml
+++ b/app/code/Magento/InventoryApi/etc/webapi.xml
@@ -8,25 +8,25 @@
 <routes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Webapi:etc/webapi.xsd">
     <!-- Source -->
-    <route url="/V1/inventory/source" method="GET">
+    <route url="/V1/inventory/sources" method="GET">
         <service class="Magento\InventoryApi\Api\SourceRepositoryInterface" method="getList"/>
         <resources>
             <resource ref="Magento_InventoryApi::source"/>
         </resources>
     </route>
-    <route url="/V1/inventory/source/:sourceCode" method="GET">
+    <route url="/V1/inventory/sources/:sourceCode" method="GET">
         <service class="Magento\InventoryApi\Api\SourceRepositoryInterface" method="get"/>
         <resources>
             <resource ref="Magento_InventoryApi::source"/>
         </resources>
     </route>
-    <route url="/V1/inventory/source" method="POST">
+    <route url="/V1/inventory/sources" method="POST">
         <service class="Magento\InventoryApi\Api\SourceRepositoryInterface" method="save"/>
         <resources>
             <resource ref="Magento_InventoryApi::source_edit"/>
         </resources>
     </route>
-    <route url="/V1/inventory/source/:sourceCode" method="PUT">
+    <route url="/V1/inventory/sources/:sourceCode" method="PUT">
         <service class="Magento\InventoryApi\Api\SourceRepositoryInterface" method="save"/>
         <resources>
             <resource ref="Magento_InventoryApi::source_edit"/>
@@ -39,50 +39,50 @@
         </resources>
     </route>
     <!-- Stock -->
-    <route url="/V1/inventory/stock" method="GET">
+    <route url="/V1/inventory/stocks" method="GET">
         <service class="Magento\InventoryApi\Api\StockRepositoryInterface" method="getList"/>
         <resources>
             <resource ref="Magento_InventoryApi::stock"/>
         </resources>
     </route>
-    <route url="/V1/inventory/stock/:stockId" method="GET">
+    <route url="/V1/inventory/stocks/:stockId" method="GET">
         <service class="Magento\InventoryApi\Api\StockRepositoryInterface" method="get"/>
         <resources>
             <resource ref="Magento_InventoryApi::stock"/>
         </resources>
     </route>
-    <route url="/V1/inventory/stock" method="POST">
+    <route url="/V1/inventory/stocks" method="POST">
         <service class="Magento\InventoryApi\Api\StockRepositoryInterface" method="save"/>
         <resources>
             <resource ref="Magento_InventoryApi::stock_edit"/>
         </resources>
     </route>
-    <route url="/V1/inventory/stock/:stockId" method="DELETE">
+    <route url="/V1/inventory/stocks/:stockId" method="DELETE">
         <service class="Magento\InventoryApi\Api\StockRepositoryInterface" method="deleteById"/>
         <resources>
             <resource ref="Magento_InventoryApi::stock_delete"/>
         </resources>
     </route>
-    <route url="/V1/inventory/stock/:stockId" method="PUT">
+    <route url="/V1/inventory/stocks/:stockId" method="PUT">
         <service class="Magento\InventoryApi\Api\StockRepositoryInterface" method="save"/>
         <resources>
             <resource ref="Magento_InventoryApi::stock_edit"/>
         </resources>
     </route>
-    <route url="/V1/inventory/stock/:stockId" method="DELETE">
+    <route url="/V1/inventory/stocks/:stockId" method="DELETE">
         <service class="Magento\InventoryApi\Api\StockRepositoryInterface" method="deleteById"/>
         <resources>
             <resource ref="Magento_InventoryApi::stock_delete"/>
         </resources>
     </route>
     <!-- StockSourceLink -->
-    <route url="/V1/inventory/stock-source-link" method="GET">
+    <route url="/V1/inventory/stock-source-links" method="GET">
         <service class="Magento\InventoryApi\Api\GetStockSourceLinksInterface" method="execute"/>
         <resources>
             <resource ref="Magento_InventoryApi::stock_source_link"/>
         </resources>
     </route>
-    <route url="/V1/inventory/stock-source-link" method="POST">
+    <route url="/V1/inventory/stock-source-links" method="POST">
         <service class="Magento\InventoryApi\Api\StockSourceLinksSaveInterface" method="execute"/>
         <resources>
             <resource ref="Magento_InventoryApi::stock_source_link"/>
@@ -95,13 +95,13 @@
         </resources>
     </route>
     <!-- SourceItem -->
-    <route url="/V1/inventory/source-item" method="GET">
+    <route url="/V1/inventory/source-items" method="GET">
         <service class="Magento\InventoryApi\Api\SourceItemRepositoryInterface" method="getList"/>
         <resources>
             <resource ref="Magento_InventoryApi::source"/>
         </resources>
     </route>
-    <route url="/V1/inventory/source-item" method="POST">
+    <route url="/V1/inventory/source-items" method="POST">
         <service class="Magento\InventoryApi\Api\SourceItemsSaveInterface" method="execute"/>
         <resources>
             <resource ref="Magento_InventoryApi::source"/>
diff --git a/app/code/Magento/InventoryCatalog/Test/Api/GetDefaultSourceTest.php b/app/code/Magento/InventoryCatalog/Test/Api/GetDefaultSourceTest.php
index ebe7a75520e7..43cb83320c22 100644
--- a/app/code/Magento/InventoryCatalog/Test/Api/GetDefaultSourceTest.php
+++ b/app/code/Magento/InventoryCatalog/Test/Api/GetDefaultSourceTest.php
@@ -34,7 +34,7 @@ public function testGetDefaultSource()
         $defaultSourceCode = $this->defaultSourceProvider->getCode();
         $serviceInfo = [
             'rest' => [
-                'resourcePath' => '/V1/inventory/source/' . $defaultSourceCode,
+                'resourcePath' => '/V1/inventory/sources/' . $defaultSourceCode,
                 'httpMethod' => Request::HTTP_METHOD_GET,
             ],
             'soap' => [
diff --git a/app/code/Magento/InventoryCatalog/Test/Api/GetDefaultStockTest.php b/app/code/Magento/InventoryCatalog/Test/Api/GetDefaultStockTest.php
index 30aaab34d436..8342fedc2ad1 100644
--- a/app/code/Magento/InventoryCatalog/Test/Api/GetDefaultStockTest.php
+++ b/app/code/Magento/InventoryCatalog/Test/Api/GetDefaultStockTest.php
@@ -34,7 +34,7 @@ public function testGetDefaultSource()
         $defaultStockId = $this->defaultStockProvider->getId();
         $serviceInfo = [
             'rest' => [
-                'resourcePath' => '/V1/inventory/stock/' . $defaultStockId,
+                'resourcePath' => '/V1/inventory/stocks/' . $defaultStockId,
                 'httpMethod' => Request::HTTP_METHOD_GET,
             ],
             'soap' => [
diff --git a/app/code/Magento/InventoryCatalog/Test/Api/StockRepository/PreventDefaultStockDeletingTest.php b/app/code/Magento/InventoryCatalog/Test/Api/StockRepository/PreventDefaultStockDeletingTest.php
index e25e93acaf22..c9cf378a6f2a 100644
--- a/app/code/Magento/InventoryCatalog/Test/Api/StockRepository/PreventDefaultStockDeletingTest.php
+++ b/app/code/Magento/InventoryCatalog/Test/Api/StockRepository/PreventDefaultStockDeletingTest.php
@@ -33,7 +33,7 @@ public function testCouldNotDeleteException()
     {
         $serviceInfo = [
             'rest' => [
-                'resourcePath' => '/V1/inventory/stock/' . $this->defaultStockProvider->getId(),
+                'resourcePath' => '/V1/inventory/stocks/' . $this->defaultStockProvider->getId(),
                 'httpMethod' => Request::HTTP_METHOD_DELETE,
             ],
             'soap' => [
diff --git a/app/code/Magento/InventoryCatalog/Test/Api/StockSourceLink/PreventAssignSourcesToDefaultStockTest.php b/app/code/Magento/InventoryCatalog/Test/Api/StockSourceLink/PreventAssignSourcesToDefaultStockTest.php
index 1a04d4486de2..dbb00b92c48e 100644
--- a/app/code/Magento/InventoryCatalog/Test/Api/StockSourceLink/PreventAssignSourcesToDefaultStockTest.php
+++ b/app/code/Magento/InventoryCatalog/Test/Api/StockSourceLink/PreventAssignSourcesToDefaultStockTest.php
@@ -19,7 +19,7 @@ class PreventAssignSourcesToDefaultStockTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH_ASSIGN_SOURCES_TO_STOCK = '/V1/inventory/stock-source-link';
+    const RESOURCE_PATH_ASSIGN_SOURCES_TO_STOCK = '/V1/inventory/stock-source-links';
     const SERVICE_NAME_ASSIGN_SOURCES_TO_STOCK = 'inventoryApiStockSourceLinksSaveV1';
     /**#@-*/
 
@@ -102,10 +102,6 @@ public function dataProviderWrongParameters(): array
                             'message' => 'Can not save link related to Default Source or Default Stock',
                             'parameters' => [],
                         ],
-                        [
-                            'message' => 'Can not save link related to Default Source or Default Stock',
-                            'parameters' => [],
-                        ],
                     ],
                 ],
             ],
diff --git a/app/code/Magento/InventoryCatalogApi/Test/Api/PreventDefaultSourceDisablingTest.php b/app/code/Magento/InventoryCatalogApi/Test/Api/PreventDefaultSourceDisablingTest.php
index 2b1ba5ac4835..1156281e68a9 100644
--- a/app/code/Magento/InventoryCatalogApi/Test/Api/PreventDefaultSourceDisablingTest.php
+++ b/app/code/Magento/InventoryCatalogApi/Test/Api/PreventDefaultSourceDisablingTest.php
@@ -19,7 +19,7 @@ class PreventDefaultSourceDisablingTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/source';
+    const RESOURCE_PATH = '/V1/inventory/sources';
     const SERVICE_NAME = 'inventoryApiSourceRepositoryV1';
     /**#@-*/
 
diff --git a/app/code/Magento/InventorySalesApi/Test/Api/StockRepository/PreventAssignedToSalesChannelsStockDeletingTest.php b/app/code/Magento/InventorySalesApi/Test/Api/StockRepository/PreventAssignedToSalesChannelsStockDeletingTest.php
index f3414956a796..851533b6d329 100644
--- a/app/code/Magento/InventorySalesApi/Test/Api/StockRepository/PreventAssignedToSalesChannelsStockDeletingTest.php
+++ b/app/code/Magento/InventorySalesApi/Test/Api/StockRepository/PreventAssignedToSalesChannelsStockDeletingTest.php
@@ -22,7 +22,7 @@ public function testCouldNotDeleteException()
         $stockId = 10;
         $serviceInfo = [
             'rest' => [
-                'resourcePath' => '/V1/inventory/stock/' . $stockId,
+                'resourcePath' => '/V1/inventory/stocks/' . $stockId,
                 'httpMethod' => Request::HTTP_METHOD_DELETE,
             ],
             'soap' => [
diff --git a/app/code/Magento/InventorySalesApi/Test/Api/StockRepository/SalesChannelManagementTest.php b/app/code/Magento/InventorySalesApi/Test/Api/StockRepository/SalesChannelManagementTest.php
index e680d68b4f9c..dec504f47ea7 100644
--- a/app/code/Magento/InventorySalesApi/Test/Api/StockRepository/SalesChannelManagementTest.php
+++ b/app/code/Magento/InventorySalesApi/Test/Api/StockRepository/SalesChannelManagementTest.php
@@ -18,7 +18,7 @@ class SalesChannelManagementTest extends WebapiAbstract
     /**#@+
      * Service constants
      */
-    const RESOURCE_PATH = '/V1/inventory/stock';
+    const RESOURCE_PATH = '/V1/inventory/stocks';
     const SERVICE_NAME = 'inventoryApiStockRepositoryV1';
     /**#@-*/