messages= dict(ITEM_NOT_PRESENT_MESSAGE="This Item is not Present",
               BID_NOT_PRESENT_MESSAGE="The Bid is not Present",
               UNAUTHORISED_ACTION_MESSAGE="You are not authorised to perform this action.",
               SOLD_MESSAGE="This item is already sold.",
               BID_DELETED_MESSAGE="The bid is deleted.",
               ITEM_DELETED_MESSAGE="The Item is deleted.",
               ITEM_UPDATED_MESSAGE="The Item is updated.",
               CANNOT_PERFORM_ACTION="Cannot Perform action. Unauthorised or Not Present",
               )
