Have you seen https://www.odoo.com/industries/software-reseller ?

Hi,

Odoo does not natively manage software license numbers/keys; there is no standard field or mechanism to generate/distribute/manage them.

Option 1: Simple Studio/Customization

          - If the requirement is only to store license keys:

                   * Add a custom field on sale.subscription (via Studio): e.g. x_license_key.

                  * If one subscription can have multiple keys:

                              - Create a related one2many model (subscription.license) with fields:

                                         -License Key

                                         - Activation Date

                                         - Expiry Date

                                         - Notes

You can then expose this in the Subscription form view.

Advantage: very simple, stays inside Subscriptions.

Limitation: No automation for generation/distribution unless you extend further.

Option 2: License Management via Custom Module

                - If you need automatic license key generation & assignment, build a small module:

                         * Define a new model: subscription.license with fields (Key, Status, Subscription, Customer, Expiry).

                         * On confirmation of subscription sale order → generate or assign a license key automatically.

                        * Possible integration with external license server if needed.

                        * Add portal access so customers can see their licenses.

Best if licenses need to be tracked, revoked, or rotated.

Hope it helps