This Deliverable consists of two parts. The first and consists of the definition and presentation of the restricted package of indicators and operational methodologies to assess them- to be implemented in Prototype number 1. This packages and methodologies for assessment have been agreed upon within the WP. The second part develops strategies for how this restricted package can be further developed in Prototype 2 and 3 of SEAMLESS-IF. Part two is an addition to the initial aim of D 2.1.1. The reason is that when developing the restricted package WP 2 deemed it important to also look forward and put the restricted package of indicators into the larger context of the development of indicators for SEAMLESS. This section sets the roadmap for the future development of indicators. Further efforts are needed to make them operational. In addition the indicators needs to be tested against further modelling work (WP3), data availability (WP4), implementation in the software framework (WP5) and assessment against user involvement (WP7). The restricted package of indicators constitutes the basis for the initial operationalisation of indicators in Prototype 1 of SEAMLESS-IF. The basis for selecting indicators to the restricted list is to create routines for the integration of different types of indicators in the SEAMLESS-IF software structure. To ensure an efficient and structured approach to indicator development and to facilitate the communication with other WPs, WP2 has deemed it important to develop a strategy for how to ensure a stable and efficient development of indicators. The basis for this strategy is to divide the indicators in three categories. 1) Indicators that can be assessed today by the SEAMLESS-IF (indicators in the restricted package)1 2) Indicators that most likely will be assessed by SEAMLESS-IF (Indicators which are planned to be assessed but for which not yet running models are available) 3) Indicators which are less likely to be assessed through models of WP3 (indicators for which WP 2 may need to develop simple models). This category could in turn be divided into two sub categories. a. Indicators where there is a possibility to produce a simple model and where necessary data exist or is possible to produce. b. Indicators, for which there is a lack of knowledge, lack of data or both. 1 Only 9 indicators from this list are made operational in Prototype 1. SEAMLESS No. 010036 Deliverable number: D2.1.1