Payroll, HR and accounting professionals
Key points of our training
Skills enhancement courses
A structured training program to help you gradually build up your skills, from making your data more reliable to mastering agency feedback.
Provision of media
All training materials are made available to participants to facilitate practical application after the course.
Face-to-face or distance learning
Available in face-to-face or distance learning formats, on an inter-company or intra-company basis, according to your needs and constraints.
Our approach
Who should attend?
Payroll, HR and accounting professionals
This Déclaration Sociale Nominative (DSN) training course is designed to support all payroll, human resources and accounting professionals in mastering their declaratory obligations, from initiation to reliability expertise.
Whether you want to master the fundamentals of reliability, or go deeper into the processing of agency returns, our expert trainers are with you every step of the way.
Program
A course tailored to your profile
Half a day to learn the basics of DSN and understand the challenges of declarations.
- Overview of DSN definitions, objectives and reporting procedures
- DSN architecture The main blocks of the company and establishment, the main blocks of the employee
- DSN challenges data reliability, DSN substitution, Business Reporting (CRM)
- Our recommendations
A full day to acquire an operational command of DSN and its reliability challenges.
- Overview of DSN
- DSN challenges
- Reliability: a must
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Checks to be carried out :
- Mirror analysis: payroll software / DSN
- Consistency checks between blocks: amounts declared and paid to SDAs, aggregated and individual declared contributions, employee activity, work stoppages and compensation, unemployment insurance entitlements, net items.
- Our recommendations
Understand feedback from organizations and be a in the process of improving reliability
A day combining theory and practice, to help you become fully involved in making your DSN more reliable.
1/2 day of theory
- Reliability is a must: DSN substitution, Compte Rendu Métier (CRM)
- CRM processing, a theoretical methodology : anomalies relating to employee identity, anomalies noted by URSSAF/MSA, anomalies raised by Agirc-Arrco
1/2 day of practice on your CRM
- Practical support : validation of the morning's knowledge, familiarization with and processing of your CRM, help in setting up processes and control tools
«G.A.C. Group's training courses have enabled me to improve my knowledge and master new developments such as the DSN substitution. I'm now much more comfortable checking my flows. Support based on reliability and listening.»
Laurence GAILHOT - Head of Payroll Department, Association AIMV
Agenda
Reserve your seats for our next sessions
Mastering DSN
Training on request
Mastering DSN - 1 day
Session of June 18, 2026
Session of September 17, 2026
Session of October 15, 2026
Training on request
Advanced reliability - 1 day
Training on request
This advanced level is organized on demand, for a session adapted to your context.
Contact us to define the dates and format that suit you best.
G.A.C. Group expertise
Frequently Asked Questions
Frequently asked questions
How do I register for this training course?
To register for this training course, simply fill out the registration form available on this page. Our experts will then contact you within 48 hours to confirm your registration and validate the details.
When will I receive my invitation and access details for the training course?
You will receive your invitation by email 7 days before the start of the training course. This email will contain all the practical information (times, location/connection link).
Is any preparatory information required before the training begins?
We ask that you complete a questionnaire so that we can assess your needs.
What are the modalities (online, in-person, hybrid)?
Training can be offered in different formats:
- Online (remote): 100% distance learning via our interactive videoconferencing platform (Teams).
- In person: physical training, Our experts can travel to your offices and provide assistance.
What type of document will I receive to certify my participation (certificate, attestation)?
At the end of the training, you will receive a training certificate and a signed attendance sheet.
What is the experience and profile of the trainers?
Our trainers are subject matter experts and instructors.
Can I take this course if I have a disability?
Yes, absolutely. We are committed to ensuring that our training courses are accessible. When you register, please let us know about your situation and any specific needs you may have (accessibility of premises, adapted materials, etc.).
Where can I find the Qualiopi certificate?
Our organization is certified Qualiopi for the quality of its training processes. Our certificate is available for download upon request from our administrative department.
Registration
Reserve your seats for our next sessions
Join the payroll and HR professionals who rely on G.A.C. Group to increase their skills in DSN.