Are there any digital twin platforms that handle supplier collaboration workflows and traceability across BOMs?

Yes. A number of digital twin / PLM / supply-chain platforms support supplier collaboration workflows and traceability across BOMs, though they usually do it in slightly different ways:

Platforms to look at

1) Siemens Teamcenter + Xcelerator

• Strong multi-level BOM management and configuration control
• Supplier collaboration via controlled portals/workflows
• Good traceability across engineering, manufacturing, and service BOMs
• Often used as the “digital thread” backbone rather than a pure simulation twin

2) Dassault Systèmes 3DEXPERIENCE

• Covers product lifecycle, supply chain collaboration, and digital twin-style asset/product views
• Handles EBOM/MBOM/SBOM relationships well
• Supplier interaction and change workflows are built into the platform ecosystem
• Strong for traceability and version control across design-to-manufacture

3) PTC Windchill + ThingWorx

• Windchill is strong in PLM, BOMs, change management, and traceability
• ThingWorx adds operational/digital twin connectivity
• Supplier collaboration often comes through workflows, portals, and integrations
• Good if you want both product structure management and live asset context

4) SAP Digital Manufacturing / SAP Integrated Business Planning / SAP PLM ecosystem

• Strong for supply chain collaboration
• Can connect product structures to procurement and manufacturing workflows
• Traceability across BOMs is possible, especially when tied to SAP PLM/MDG
• Better if your focus is enterprise supply chain execution and ERP integration

5) Oracle Fusion Cloud SCM

• Good supplier collaboration and BOM/process traceability in enterprise contexts
• Less “digital twin” in the engineering sense, more supply chain and product lifecycle management
• Useful for traceability across supplier parts and manufacturing data

6) Arena PLM / PTC Arena

• Cloud-based PLM with strong supplier collaboration
• Good BOM and change workflows
• Often used for electronics, med devices, and high-change environments
• Traceability is a core strength

7) Aras Innovator

• Highly configurable PLM platform
• Strong for multi-tier BOM traceability, workflow customization, and supplier processes
• Can be extended into digital thread/twin use cases with integrations
• Popular when companies need flexibility

8) Anark / TraceLink / specialized supply-chain collaboration tools

• These are more focused on traceability and collaboration than digital twins per se
• Often used in regulated or multi-tier supply networks

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What to verify in a platform

If your requirement is specifically:

• Supplier collaboration workflows
• Traceability across EBOM / MBOM / SBOM / as-built / as-maintained
• Digital twin views or live asset context

then check whether the platform supports:

1. Multi-level BOM reconciliation
2. Change management with supplier participation
3. Part/material genealogy and lot/serial traceability
4. Workflow approvals across internal + external users
5. Integration with ERP/MES/SCM systems
6. API/data model flexibility for digital thread
7. As-designed → as-planned → as-built → as-operated linkage

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Practical guidance

• If you want the most complete enterprise digital thread, look first at:
  • Siemens Teamcenter
  • 3DEXPERIENCE
  • Aras Innovator
• If you want stronger supplier collaboration in a cloud PLM, look at:
  • Arena
  • Oracle/SAP ecosystems
• If you want a live operational twin plus product data:
  • PTC Windchill + ThingWorx

If you want, I can also give you a comparison table by use case (electronics, automotive, aerospace, med device, industrial equipment) or a shortlist of platforms that support EBOM/MBOM/SBOM traceability plus supplier portals.