When a new software installation is discovered and a record is created in the Software Installation table (cmdbsamswinstall), the system runs a business rule to find a matching record in the Discovery Model table (cmdbsamswdiscoverymodel). If a matching Discovery Model already exists, the system populates the 'Discovery model' reference field on the new Software Installation record. This action associates the new installation with the pre-existing, normalized Discovery Model, ensuring that all installations of the same software are correctly grouped for reconciliation.

A. Deleting and recreating a Discovery Model is incorrect. This would be inefficient and would break existing relationships with other software installations and software models.
B. The system does not simply ignore the record. It actively creates a reference from the new installation record to the existing Discovery Model record.
C. A new Discovery Model record is created only when a matching record does not already exist in the Discovery Model table.

1. ServiceNow Product Documentation - Software discovery models: "When software is discovered, a discovery model is created automatically... If a discovery model already exists for the discovered software, the new software installation is mapped to the existing discovery model." (ServiceNow, Software Asset Management > Key terms and concepts > Software discovery models)

2. ServiceNow Product Documentation - Data flow for software installation and discovery model creation: "When a software installation is discovered, a record is created in the Software Installation [cmdbsamswinstall] table. A business rule then runs to search for a matching record in the Discovery Model [cmdbsamswdiscoverymodel] table... If a matching discovery model is found, the Discovery model field on the Software Installation record is populated with a reference to the discovery model." (ServiceNow, Software Asset Management > Reference > Data flow for software installation and discovery model creation)