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  1. SY Information Center
  2. Security and Compliance

Security and Compliance

E-invoicing

  • What is the invoicing mandate?
  • I have been asked to sign a mandate. Why?
  • What does the "Signed PDF" e-invoicing mode mean?
  • What does the "Unsigned PDF" e-invoicing mode mean?
  • Which e-invoicing mode should I choose?
  • My client offers to digitise my invoices in PDF or signed PDF. How and when should I choose?

Archiving

  • What is SY archival?
  • Does SY offer an electronic safe?
  • How long are documents stored on SY?
  • How long are invoices stored on SY?
  • Where is the data stored by SY hosted?
  • I no longer want to use the SY portal. How can I implement reversibility to recover my bills?

VAT rules

  • What are the regulations for tax digitisation?
  • If I send an invoice to my client on SY, do I have to keep a paper copy of the invoice?
  • If I send an invoice through SY, do I also have to send a paper invoice by post?
  • Does sending through SY guarantee that my invoices are legally compliant?
  • Are my invoices sent via SY legally recognised by the tax authorities?
  • How can the tax authorities access my invoices if there is an audit?
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