How do you avoid multiple versions of the same document?

Efficiency question :
Multiple versions of the same document are a common problem in companies. When a file is emailed to several employees, each person may save a copy, make changes, and send back another version.
It then becomes difficult to identify which document contains the latest information and which changes should be kept.
An effective solution is a centralized document location where employees work directly on the same file instead of creating multiple copies.
Microsoft SharePoint and OneDrive make it possible to maintain a shared document and allow several users to work on it simultaneously.
For example, several employees can edit the same Excel or Word file without emailing successive versions to one another.
Changes are saved in the centralized document, and version history can, depending on configuration, be used to view or recover earlier versions.
This approach reduces confusion, supports collaboration, and lets employees work with the most up-to-date information.
Key issues:
The main issue is maintaining a single authoritative document while allowing employees to make necessary changes.
Avoid copying documents into multiple folders or sending them as attachments when several people need to collaborate on their preparation.
Links to a centralized document let users access the same file without multiplying copies.
Another issue is retaining earlier versions. Even when a document is centralized, it may be necessary to recover its contents from an earlier date, particularly after an accidental change.
Documents being drafted must also be distinguished from officially approved documents. Some organizations must retain a final version of a contract, policy, or report while work continues on a new version.
Version management must therefore account for the collaboration, approval, and retention requirements of each document type.
Challenges:
The main challenge is changing the habits of employees who routinely exchange documents as email attachments.
Even when a file is stored in SharePoint, a user can download a copy, edit it locally, and create an independent version of the original.
Collaboration methods that allow users to work directly on centralized documents should therefore be preferred.
Simultaneous editing presents another challenge. Although Microsoft 365 supports co-authoring for many Word, Excel, and PowerPoint files, some features, file formats, or configurations can limit it.
For example, Excel workbooks with specialized features, including certain VBA automations, may require a different workflow from standard workbooks.
Processes are also needed when documents must be approved before publication and to prevent draft versions from being treated as official documents.
Finally, version history should be configured according to retention requirements and available storage capacity.
Technology:
Microsoft SharePoint provides version-management features that retain a history of changes made to files in a document library.
When a document is modified, SharePoint can save a new version according to library settings. Authorized users can review the history, compare certain versions, or restore an earlier version when necessary.
Microsoft OneDrive also offers version history for compatible files, making it possible to recover previous changes.
Microsoft Word, Excel, and PowerPoint support co-authoring when files are stored in a compatible environment and the required technical conditions are met.
AutoSave keeps changes in the shared file without requiring users to create a new copy manually.
Microsoft Teams simplifies access to collaborative documents. Files shared in standard channels are generally stored in SharePoint, allowing team members to work from a common source.
For documents requiring formal validation, SharePoint can also be configured with approval mechanisms and, when needed, major and minor versions.
Microsoft Power Automate can complement these features by launching an approval process when a document reaches a particular stage.
For example, once an employee finishes preparing a contract, an automated flow can send an approval request to a manager, record the decision, and update the document's status.
For more advanced needs, SharePoint metadata can distinguish documents that are being drafted, reviewed, approved, or archived.
Check-out and check-in features can also be used for processes requiring stricter control over changes. However, mandatory check-out can prevent simultaneous co-authoring and should be used only when justified.
Developer's advice:
To avoid multiple versions, start by establishing a single authoritative location for each document used collaboratively.
Share SharePoint or OneDrive links rather than email attachments. Employees can then view and edit the same document without creating independent copies.
Enable and configure version history according to organizational needs. It is not necessary to keep every version of every document indefinitely, especially when files are large or frequently modified.
For documents requiring approval, consider automating the process with Power Automate instead of manually creating files named “Final version,” “Final version 2,” or “Corrected final version.”
Once a document is approved, subsequent changes can be controlled and, where necessary, an official copy can be retained in an appropriate location.
For Excel files containing VBA macros or features incompatible with co-authoring, establish a suitable workflow. Separating shared data from the file containing the automation can help reduce editing conflicts.
The goal is to let employees collaborate on a common document source while retaining the ability to trace changes and recover previous versions when needed.