This European Standard establishesThe requirements forThe verification of a space system product.It specifies the fundamental concepts of the verification process,The criteria for definingThe verificationstrategy andThe rules forThe implementation of the verification programme.It includes also in annexes A and BThe description of the required documentation (i.e. DRDs) and someguidelines on specific aspects of the verification process such asThe model philosophy definition.This European Standard is intended to apply to different products at different levels (i.e. from a singleequipment toThe overall system). It is applicable to bothThe customer andThe supplier of the product duringall project phases.