If the requirements referred to in Rule 89.1 have been complied with, the Registry shall as soon as practicable:

(a) record the date of receipt of the Application to annul or alter a decision of the Office and attribute an action number to the file;

(b) record the file in the register;

(c) inform the claimant of the action number of the file and the date of receipt; and

(d) forward the Application to the European Patent Office, with an indication that the Application is admissible.