2.3.1 General considerations 

Since there is no right to amend the application until after the international search has been established, the international search must be carried out on the basis of the search copy of the application as transmitted to the EPO as ISA by the RO, except that obvious mistakes or formal matters which are contrary to the PCT and are called to the applicant's attention by the RO may be corrected (see also GL/PCT‑EPO H‑IV).