The reason concerns the fact that either: a) you have not yet proceeded to any legal transaction with the Department of Lands and Surveys at any District Land Office and therefore your identity has not been entered in the Land Information System. For this reason you should follow the instructions here b) The immovable property  that you possibly own is registered in the Land Information System of the Department of Lands and Surveys with a distinctive number other than your identity number / ARC number. To resolve this issue, it is recommended: To use the e-service “Property Declaration” by submitting all the necessary documents, in order to merge this distinctive number with the ARC number, or alternatively To follow the instructions here