text: CREATE TABLE notifications (
    id                        BIGSERIAL     PRIMARY KEY,
    notification_id           VARCHAR(50)   NULL,
    zip_file_name             VARCHAR(255)  NOT NULL,
    po_box                    VARCHAR(50)   NULL,
    service                   VARCHAR(100)  NOT NULL,
    document_control_number   VARCHAR(100)  NULL,
    error_code                VARCHAR(25)   NOT NULL,
    error_description         VARCHAR(255)  NOT NULL,
    created_at                TIMESTAMP     NOT NULL,
    processed_at              TIMESTAMP     NULL,
    status                    VARCHAR(50)   NOT NULL
  );
  CREATE INDEX notifications_zipfilename_service_idx ON notifications (zip_file_name, service);
  