2.2 Content of the application as "originally" filed – general rules
2.2.6 Priority documents
Under Art. 123(2) it is impermissible to add to a European application matter present only in the priority document for that application (see T 260/85) unless this is done under the provisions of Rule 56(3) (H‑IV, 2.2.2) or Rule 56a(4) (H‑IV, 2.2.3). For correction of errors, see H‑VI, 4.