Customizing the Object Model Contents Adding an Attribute Adding a Relationship Creating Deletion Rules for Relationships Creating an Enumerated List Adding a New Custom Class Enabling Auditing for a Custom Class Viewing Auditing Information for Classes Setting the Join Path to Site Viewing Data Members Creating Custom Validation Rules for Attributes Creating Custom Validation Rules for Relationships Creating Custom Messages Customizing Approval Request Emails Creating Custom States Creating Asset Subtypes Creating Failure Subtypes Creating Indicator Subtypes Customizing Indicator Subtypes This section contains topics that explain how to create object model customizations. Note: In order to make changes in the object model, you must log on to APM with the administrator privilege. See Logging on as an Administrator.