- they must refer to the territory of the Republic of Croatia, internal sea waters, territorial sea, continental shelf and its ecological protection or economic areas and other areas over which the Republic of Croatia exercises sovereign rights,
- that they are in electronic form
- that they are within the jurisdiction or scope of the NSDI subjects
- to refer to one or more themes referred to in Article 9, paragraph 1 of the NSDI Act
- not to refer to classified spatial data.
The NSDI Act is in accordance with the Article 6 applied to spatial data sources under following conditions: