diff --git a/lib/handler/index.js b/lib/handler/index.js
index 6c78294..e79de63 100644
--- a/lib/handler/index.js
+++ b/lib/handler/index.js
@@ -7,7 +7,7 @@ async function readAttachment(Key, token, credentials) {
     const document = await readDocument(Key, token, credentials.uri);
     return document;
   } catch (error) {
-    throw new Error(error);
+    throw error;
   }
 }
 
@@ -30,12 +30,11 @@ async function readDocument(Key, token, uri) {
     const responseBuffer = Buffer.from(response.data, "binary");
     return responseBuffer;
   } catch (error) {
-    let statusText = "An Error Occurred";
-    if (error.response?.statusText) {
-      statusText = error.response.statusText;
+    if (error.message = "Error: AxiosError: Request failed with status code 404" && error.status == 404){
+      error.message = "Attachment not found in the repository"
     }
-
-    throw new Error(statusText);
+    error.code = error.status
+    throw error;
   }
 }
 
diff --git a/lib/sdm.js b/lib/sdm.js
index f16f88d..bc3deb6 100644
--- a/lib/sdm.js
+++ b/lib/sdm.js
@@ -66,7 +66,7 @@ module.exports = class SDMAttachmentsService extends (
       const content = await readAttachment(Key, token, this.creds);
       return content;
     } catch (error) {
-      throw new Error(error);
+      throw error;
     }
   }
 
diff --git a/test/lib/handler/index.test.js b/test/lib/handler/index.test.js
index 5b082a8..b13b907 100644
--- a/test/lib/handler/index.test.js
+++ b/test/lib/handler/index.test.js
@@ -68,27 +68,43 @@ describe("handlers", () => {
       axios.get.mockImplementationOnce(() =>
         Promise.reject({
           response: {
-            statusText: "something bad happened",
-          },
+            code: 500,
+            message: "Could not read the attachment",
+          }
         })
       );
-
+    
       await expect(
         readAttachment("123", "a1b2c3", { uri: "http://example.com/" })
-      ).rejects.toThrow("something bad happened");
-    });
-
-    it('throws error with "An Error Occurred" message when statusText is missing', async () => {
+      ).rejects.toMatchObject({
+        response: {
+          code: 500,
+            message: "Could not read the attachment",
+        },
+      });
+    });    
+  
+    it("throws specific error message for 404 status", async () => {
+      let actualError = {
+        message: "Error: AxiosError: Request failed with status code 404",
+        code: "AN ERROR OCCURRED",
+        status: 404,
+      };
+      
+      let checkError = {
+        message: "Attachment not found in the repository",
+        code: 404,
+        status: 404,
+      };
+      
       axios.get.mockImplementationOnce(() =>
-        Promise.reject({
-          response: {},
-        })
+        Promise.reject(actualError)
       );
-
+    
       await expect(
         readAttachment("123", "a1b2c3", { uri: "http://example.com/" })
-      ).rejects.toThrow("An Error Occurred");
-    });
+      ).rejects.toMatchObject(checkError);
+    });    
   });
 
   describe("getRepositoryInfo", () => {
diff --git a/test/lib/sdm.test.js b/test/lib/sdm.test.js
index 8a2ae1d..b7c1e6f 100644
--- a/test/lib/sdm.test.js
+++ b/test/lib/sdm.test.js
@@ -135,15 +135,19 @@ describe("SDMAttachmentsService", () => {
       const attachments = ["attachment1", "attachment2"];
       const keys = ["key1", "key2"];
       const response = { url: "mockUrl" };
+      const errorMessage = new Error("Attachment not found in the repository");
+      errorMessage.code = 404;
+    
       getURLFromAttachments.mockResolvedValueOnce(response);
+      fetchAccessToken.mockResolvedValueOnce("mockToken");
       readAttachment.mockImplementationOnce(() => {
-        throw new Error("Error reading attachment");
+        throw errorMessage;
       });
-
+  
       await expect(service.get(attachments, keys, req)).rejects.toThrow(
-        "Error reading attachment"
+        errorMessage
       );
-
+  
       expect(getURLFromAttachments).toHaveBeenCalledWith(keys, attachments);
       expect(fetchAccessToken).toHaveBeenCalledWith(
         service.creds,
@@ -151,7 +155,7 @@ describe("SDMAttachmentsService", () => {
       );
       expect(readAttachment).toHaveBeenCalledWith(
         "mockUrl",
-        token,
+        "mockToken", // Passing the mocked token value
         service.creds
       );
     });