TIA Portal TestSuite and Application Test operations. Use for managing test sets, application tests, style guide rules, and automated system testing workflows.

2026-06-2430

name	tia-multiuser
description	TIA Portal Multiuser Engineering operations. Use for managing server projects, local sessions, and multiuser commissioning workflows.
license	MIT

TIA Portal Multiuser Engineering

Scope

Multiuser Engineering workflows using the TIA Portal Openness API. Covers Local Sessions, Server Projects, and Multiuser Commissioning.

Reference files

Load ONLY the reference file(s) relevant to the task.

Reference file	Load when the task involves
`references/v21-api-surface.md`	Comprehensive reference for `Siemens.Engineering.Multiuser` (LocalSession, ServerProject, MultiuserService).

Key Workflows

Managing Local Sessions

Locate the MultiuserService on the Project.
Use LocalSession to interact with server projects.
Perform Update() to sync with the server.
CheckIn() changes to the server project.

Multiuser Commissioning

Access MultiuserCommissioningService for commissioning tasks.
Manage asynchronous execution states.

Enforcement

Always verify the LocalSession state before performing a CheckIn.
Use AccessOptions to handle conflicts during Update.