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This document specifies the definition for services at the point of interaction between a client and server.

The following are within the scope of this document:

-   the specification of the structure, components and conventions for domain- and technology-independent services implementation methods for STEP (ISO 10303-1);

-   transformation of the SysML metamodel constructs to OpenAPI constructs for RESTful web services (see OpenAPI:3.0.0^[25] and IETF RFC7231).

The following are outside the scope of this document:

-   domain specific services definitions;

-   the transformation of SysML metamodel constructs into OpenAPI constructs that are not used in the STEP extended architecture^[12][13];

-   the transformation of SysML metamodel constructs into OpenAPI constructs for other purposes than representing SysML constructs as STEP concepts;

-   codes and scripts to transform SysML XMI to OpenAPI schema;

-   the transformation of SysML constraints into OpenAPI schema;

-   implementation of technology-specific services definitions other than RESTful OpenAPI;

-   definition of management and maintenance of information and data on a server.