The DSN (Déclaration Sociale Nominative) is the mandatory monthly social declaration that French employers file to report payroll, contributions, and employee events to the social administration. It replaced a tangle of separate filings with a single, standardized data feed generated directly from the payroll system.
The DSN is generated from payroll, which makes it only as accurate as the payroll data behind it. Every salary, contribution, bonus, and leave event flows into the declaration. If payroll carries an inconsistency (a contribution base that does not match, an employee event miscoded, an amount that drifts from the accounts) the DSN carries it too, and corrections after filing are painful.
The control that matters is upstream: confirming that payroll figures are internally consistent and reconcile with the accounting and HR records before the declaration goes out.
Phacet strengthens that check. The agent that checks payroll consistency verifies that payroll figures hold together and flags anomalies, while the agent that reconciles balance sheet accruals against HR and payroll ties payroll provisions back to the accounts. Each control exposes its reasoning through a native audit trail.
The DSN reports payroll to the administration every month. Phacet helps employers send it on data that has already been checked, reducing the corrections, queries, and adjustments that follow a shaky declaration.
