text: **2 General information**
  
  The NAIIS is a web-based application designed to enable non-Annex I Parties estimate their national GHG 
  inventories according to the UNFCCC guidelines and using the IPCC methodologies, and to report the results in their 
  national communications and biennial update reports. 
  
  **2.1** **System overview**
  
  The NAIIS web application has the following functionalities: 
  
  1. User management (only for the user roles NFP and PM) 
  2. Submission management 
  3. Data entry 
  4. Key category analysis 
  5. Reporting tables 
  6. Data Export/Import 
  7. Completeness 
  8. Consistency 
  
  The NAIIS web application allows input of data through three different channels: 
  
  1. Manual input into the entry grids 
  2. Partial or full import of data from Excel 
  3. Bulk import of data from XML 
  
  The GHG emissions totals, by gas and by sector, are automatically calculated and saved based on the values 
  entered for activity data (AD), emission factors and other relevant parameters. In addition, the software facilitates the 
  reporting of other category specific information, for example, the choice of the method for activity data and emission 
  factors. 