GDPR register: how to define the right level of granularity for your treatment sheets?
The register of processing activities is not a static archive, but a living governance lever. For many DPOs, the major challenge lies in the granularity of processing forms: how to be precise without unnecessarily multiplying documents? Based on a set of indicators (purposes, data categories, retention periods), it is possible to structure a coherent register. This guide details the golden rules for grouping or dividing your activities in order to ensure sustainable compliance and simplified management thanks to the appropriate SaaS tools.

Registry of processing activities: why granularity is the major challenge for DPOs
Many managers and service managers think that complying with the General Data Protection Regulation (GDPR) is a closed case. Because the text came into force in May 2018, the common misconception is that every company now has a definitive and perfectly structured register of processing activities. However, the reality is quite different; the register is not an archive but a permanent project whose stumbling block remains the granularity of the treatment sheets during each update.
The illusion of the completed register and the Data Protection Officer's puzzle
While most organizations initiated an inventory when the GDPR came into force, many now end up with obsolete or unusable documents. Data Protection Officers (DPOs) face a paradox: they have a list of treatments, but they still struggle to determine the right level of precision.
At Adequacy, for a few years now, in order to get out of this impasse, we have been applying and recommending to our clients two fundamental golden rules: on the one hand, treatment sheets must be clear and precise; on the other hand, the total number of forms must be limited as much as possible to remain manageable. Finding this balance is the only way to ensure sustainable compliance and real accountability.
Methodology: the cluster of clues to assess the need for a treatment sheet
The decision to split or group activities in your GDPR software is based on a set of specific clues. You must analyze whether the treatments pursue similar or similar purposes, if they relate to the same categories of data and if they concern the same categories of persons concerned. The mobilization of a single internal service for these operations is also an indicator of possible grouping.
However, certain criteria may require the creation of separate forms to ensure the accuracy of the register:
- The data collected is different for each category of persons concerned
- The storage periods are different for each category of persons concerned.
- Some data in the same category is not accessible to all recipients entered
Conversely, you should not multiply the cards unnecessarily. Criteria such as the use of different computer or paper media, the use of several applications for the same treatment or the mobilization of several different services do not justify the creation of new forms.
Adequacy expertise at the service of your RGPD compliance
Recognizing these structuring difficulties, Adequacy offers targeted resources to support data controllers. A complete video on our YouTube channel discusses the method for choosing granularity without burdening administrative management and explains how to group treatments with a specific purpose around a single and coherent purpose, while detailing this main purpose into sub-purposes if necessary.
The Adequacy software was designed to meet precisely this need for flexibility. By facilitating structuring according to these granularity rules, the tool transforms a static obligation into a dynamic governance lever.
5 best practices for a structured activity register
- Group transactions around a single and coherent purpose to avoid unnecessary fragmentation of the register
- Detail the main purpose in sub-purposes if this makes it possible to provide the necessary precision without creating a new sheet
- Focus on the objective of the treatment rather than on the technical tools or applications used
- Systematically check the consistency of storage periods within the same treatment sheet
- Periodically review the register to ensure that the cluster of clues (people, data, purposes) still reflects operational reality
FAQ - the challenges of granularity and data compliance
Is it better to have a lot of specific files or few global files?
The objective is to limit the number of sheets as much as possible while ensuring that they remain clear and accurate. If the data and the retention periods are the same, grouping is strongly recommended to facilitate the management of the register.
Does the use of several software for the same mission require several sheets?
No, the fact that different applications are used to support a single treatment sheet is not a relevant criterion for dividing the treatment. The technical tool does not define the treatment.
How do I know if I need to detail my purposes?
If a main purpose is too broad, it is recommended to detail it into sub-purposes within Adequacy to maintain clarity while remaining within the framework of a single sheet.
What is the advantage of Adequacy software for updating the registry?
It allows these granularity rules to be applied natively, offering an interface where the management of purposes and sub-purposes becomes intuitive for the DPO and operational departments, thus guaranteeing a register that is always up to date.


