To delete existing batch

1. Go to the Magento Admin panel.
2. On the top navigation bar, point to the Wish menu.
   The menu appears as shown in the following figure:
   
3. Click the Batch Request menu.
   The Wish Batch Listing page appears as shown in the following figure:
   On this page, all the available batches are listed.
4. Select the checkboxes associated with the required Batches.
5. Click the Arrow button associated with the Actions list, and then select the Delete option.
6. Click the Submit button.
   A confirmation dialog box appears.
7. Click the OK button.
   The selected batches are deleted from the Magento store.