Activity aiming to define a set of procedures and/or criteria for the recognition of augmentation systems (e.g. SBAS) as part of the WWRNS by IMO. To this purpose, two intersessional meetings have been agreed in IALA ENG18  to refine the content of the paper,  such as a final version will be presented in ENG19 for its review and approval. Thus, in this first meeting a first draft will be reviewed and discussed between IALA members contributors