4.19 Procuring authorities should at this stage revisit the quantitative assumptions made at the programme level. At Stage 2 the project team will be expected to update the spreadsheet in respect of the project's specific characteristics and on the basis of past experience. (See also para 1.25).
4.20 The level of accuracy of the quantitative assessment should be borne in mind in undertaking the assessment. Where the outcome is particularly sensitive to subjective inputs this should be highlighted. In order to support this process, it is vital that information is gleaned at all stages of the procurement process and information from post-implementation evaluation exercises be fed back to programmes and projects beginning their life cycle.