When the declaration is made electronically by an employer covered by the general social security scheme who has previously registered with an authentication service, the formality is deemed to have been completed by providing the identification number of the employing establishment, the national identification number of the employee if he/she is already registered with the social security scheme and if he/she has already been the subject of a declaration prior to recruitment within a period set by decree, as well as the information provided for in 3° and 4° of article R. 1221-1.