ISCA Requirements
ISCA Requirements
Section titled “ISCA Requirements”The so-called ISCA requirements define the technical and procedural criteria for certified POS systems in France:
Inalterability
Section titled “Inalterability”Daily, monthly, and annual closings must be calculated. Systems must retain both period grand totals and perpetual totals. All records must be hashed, signed, and journaled to ensure tamper-evident integrity and prevent undetected changes.
Security
Section titled “Security”Each transaction must be protected by a digital signature or cryptographic hashing, enabling verifiability and authenticity.
Conservation
Section titled “Conservation”Records must be stored for a minimum of 6 years. When the fiscal year does not align with the calendar year, the retention period extends to 7 years.
Archiving
Section titled “Archiving”All fiscal data must be exportable in a secure and human-readable format, suitable for audits and official inspections.