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Siemens AG
Siemens AG and Siemens Energy use central e-mail inboxes and portals such as SupplyOn for invoice submission with strict format constraints.
Key Requirements
PDF/A-1 or PDF/A-2 Only
Only PDF/A-1 or PDF/A-2 is accepted.
One File = One Invoice
Each PDF must contain exactly one invoice.
All Attachments Merged
Supporting documents must be merged.
No Handwritten Corrections
Any handwritten corrections will lead to rejection.
No Data in Email Body
Email body content is ignored.
PO Number Mandatory
BT-13 is required.
Submission Channels
Central Email Inbox
Email body is ignored — only attachments are processed.
SupplyOn Portal
Structured invoice submission via supplier portal.
