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ISO 10303-242 specifies the application protocol for Managed model based 3d engineering.

The following are within the scope of ISO 10303-242:
• products of automotive, aerospace and other mechanical manufacturers and of their suppliers, including parts, assemblies of parts, tools, assemblies of tools, and raw materials;
• engineering and product data for the purpose of long-term archiving and retrieval;
• product data management
o breakdown data representing a parent-child structures, such as functional, physical, system or zonal breakdowns. A breakdown is made of breakdown element;
o product definition data and configuration control data for managing large numbers of variants of products during the design phase;
o data describing the changes that have occurred during the design phase, including tracking of the versions of a product and of the data related to the documentation of the change process;
o delta change: data describing the exchange of differences with respect to a set of data previously sent;
o identification of standard parts, based on international, national, or industrial standards;
o release and approval data for product data;
o data that identify the supplier of a product and related contract information;
o properties of parts or of tools;
o references to product documentation represented in a format other than those specified by ISO 10303;
o product manufacturing information, covering the design and manufacturing planning phase;
o identification of physically realized parts or of tools, including assembly of physically realized products and recording of test results.

• process planning
o process plan information describing the relationships between parts and the tools used to manufacture them and to manage the relationships between intermediate stages of part or tool development.

• mechanical design
o different types of geometry models, including:
 2D- and 3D-wireframe geometry model;
 geometrically bounded surface geometry model;
 topologically bounded surface geometry model;
 faceted-boundary geometry model;
 boundary geometry model;
 compound shape geometry model;
 constructive solid geometry model;
 parametric and constrained geometry model;
 2D-sketch model;
 3D tessellated geometry model;
 3D scan data;
 curved triangles.
o representation of the shape of parts or tools that is a combination of two or more of different types of geometry models;
o data that pertains to the presentation of the shape of the product;
o representation of portions of the shape of a part or a tool by manufacturing features;
o data defining surface conditions;
o dimensional and geometrical tolerance data;
o quality criteria and inspection results of given three dimensional product shape data;
o product documentation as annotated 3D models and as drawings.

• message
o data that identify a message and an envelope.

• interface
o data representing the interfaces with version management mechanism and the definition of connection with connectors.

• mating
o data representing the detailed assembly information on how the involved part occurrences are mated together and which constraints apply.

• kinematics
o simulation data for the description of kinematic structures and motion.

• analysis management
o data representing an analysis, managed in versions and the link to the result of the analysis.

• composite design
o definition of composite structural parts;
o the association of the constituents of composite and metallic parts with the constituent shape model;
o the depiction of composite laminate tables describing the material, stacking sequence and ply orientation;
o constituents of the composite or a portion of the composite with a defined shape;
o the identification of material specifications from internal and external sources and their properties for a specific operating environment.

• electrical harness assembly design
o electrical wire harnesses design;
o physical electrical harness model for design and construction;
o electrical connectivity information in multilevel assemblies;
o wire and cable list data;
o definition of wire, cable and connector features.

• additive manufacturing part design
o build information.

• requirements management
o verification and validation.