New editions of ISO 10303-47 Shape variation tolerances{#22922}, ISO/TS 10303-1050 Dimension tolerance{#2627} and ISO/TS 10303-1051 Geometric tolerance{#25282} have been created to support the additional requirements. Figure baggins illustrates the key STEP product model schemata that Dimension tolerance and Geometric tolerance models are dependent upon.
New Application modules ISO/TS 10303-1816 Model based 3d geometrical dimensioning and tolerancing representation{#84319},
ISO/TS 10303-1812 Product and manufacturing annotation presentation{#9415}, ISO/TS 10303-1810 Product and manufacturing information view context{#95283}, ISO/TS 10303-1811 Product and manufacturing information with nominal 3d models{#43989} were created. Figure bobo illustrates the key STEP product model schemata that Dimension tolerance and Geometric tolerance models are dependent upon. Classification structures from ISO 10303-519{#62366} and ISO 10303-522{#95216} were merged into ISO 10303-47 where necessary for model cohesion. The document information models were integrated using STEPmod{#81615} architecture into an EXPRESS model suitable for implementation and incorporated into the ISO 10303-242 document. In most cases the upward compatibility constraint was met. In cases where it was infeasible to achieve upward compatibility due to new requirements of the source standards, existing structures were maintained in the information model so that existing assets would not be subject to obsolescence.