fixed mime type validation error

sdm/src/main/java/com/sap/cds/sdm/constants/SDMConstants.java

@@ -45,6 +45,8 @@ private SDMConstants() {
   public static final String SDM_CONNECTIONPOOL_PREFIX = "cds.attachments.sdm.http.%s";
   public static final String USER_NOT_AUTHORISED_ERROR =
       "You do not have the required permissions to upload attachments. Please contact your administrator for access.";
+  public static final String MIMETYPE_INVALID_ERROR =
+      "This file type is not allowed in this repository. Contact your administrator for assistance.";
   public static final String USER_NOT_AUTHORISED_ERROR_LINK =
       "You do not have the required permissions to create links. Please contact your administrator for access.";
   public static final String FILE_NOT_FOUND_ERROR = "Object not found in repository";

sdm/src/main/java/com/sap/cds/sdm/service/DocumentUploadService.java

@@ -320,6 +320,11 @@ private void formResponse(
         } else if ((responseCode == 403)
             && (responseString.equals("User does not have required scope"))) {
           status = "unauthorized";
+        } else if (responseCode == 403) {
+          JSONObject jsonResponse = new JSONObject(responseString);
+          String message = jsonResponse.getString("message");
+          if ("MIME type of the uploaded file is blocked according to your repository configuration."
+              .equals(message)) status = "blocked";
         } else {
           JSONObject jsonResponse = new JSONObject(responseString);
           String message = jsonResponse.getString("message");

sdm/src/main/java/com/sap/cds/sdm/service/handler/SDMAttachmentsServiceHandler.java

@@ -293,6 +293,8 @@ private void handleCreateDocumentResult(
         throw new ServiceException(createResult.get("message").toString());
       case "unauthorized":
         throw new ServiceException(SDMConstants.USER_NOT_AUTHORISED_ERROR);
+      case "blocked":
+        throw new ServiceException(SDMConstants.MIMETYPE_INVALID_ERROR);
       default:
         cmisDocument.setObjectId(createResult.get("objectId").toString());
         dbQuery.addAttachmentToDraft(