--- sourceDocument: Australia Asset Management sourceDocumentLink: https://www.servicenow.com/docs/r/australia/it-asset-management Release : - australia ft:locale : - en-US ft:publication_title : - Australia Asset Management ft:clusterId : - itam bundleId : - itam workflow : - Technology --- # OT Asset Management licensing # OT Asset Management licensing {#ariaid-title1} Release version: Australia Updated March 12, 2026 ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 3 minutes to read Summarize ![AI sparkle icon](https://servicenow.com/docs/portal-asset/ai-sparkle-icon) Summarized using AI This content was generated using new OpenAI-powered functionality. Results are provided on an as is basis and are not guaranteed to be accurate or complete. ## Summary of OT Asset Management licensing The ServiceNow® OT Asset Management application uses a licensing model based on resource categories, grouping related model categories such as Industrial and Hardware. Licensing is determined by a Subscription Unit ratio, which defines how many assets correspond to one subscription unit. This ensures that organizations pay according to the volume and type of OT assets managed within the platform. Show full answer Show less When activated, all OT Asset Management license resource categories are included by default. Custom model categories inherit the licensing association of their parent Industrial or Hardware model category, automatically aligning with the appropriate resource category and subscription unit calculation. ## Key Features * **Resource Categories and Subscription Unit Ratios:** Assets are grouped into resource categories with defined subscription ratios, such as 1:1 for Industrial General OT or 10:1 for OT Field Devices. This ratio indicates how many assets correspond to one license unit, enabling precise license consumption tracking. * **Industrial and Hardware Model Category Support:** The licensing covers assets in Industrial and Hardware categories, with default groups like OT Servers, OT Network Gear, OT Storage, OT Mobile Devices, and others, each with specific subscription ratios. * **Custom Model Category Licensing:** Custom model categories under licensed Industrial or Hardware parents inherit the parent's resource category, simplifying license management for tailored asset classifications. * **Hardware Asset Licensing Distinctions:** Only hardware assets flagged as OT (Operational Technology) are licensed under OT Asset Management. Non-OT hardware assets are licensed under Hardware Asset Management (HAM), and OT Asset Management workflows support only OT hardware assets. * **Compatibility with Hardware Asset Management (HAM):** OT Asset Management hardware resource categories have equivalent categories in HAM licensing. When both applications are active, licensing and workflow support are clearly delineated between OT and non-OT hardware assets. * **License Usage Visibility:** Customers can view consumed subscriptions and license usage details through the ITAM License Report, facilitating accurate license monitoring and compliance. ## Practical Implications for ServiceNow Customers * Understand your asset inventory and classify assets correctly into Industrial or Hardware model categories to ensure accurate licensing and cost management. * Leverage the Subscription Unit ratios to anticipate licensing costs based on asset volume and type. * Use the ITAM License Report to monitor license consumption regularly, helping optimize license usage and plan for scaling. * Ensure OT hardware assets have the OT entity flag set to true to benefit from OT Asset Management features and licensing. * Coordinate licensing strategies if using both OT Asset Management and Hardware Asset Management applications to avoid overlap and ensure compliance. The ServiceNow® platform uses a licensing method where your organization is charged for using the OT Asset Management application. In this licensing model, all assets of the Industrial and Hardware model categories are charged based on the Subscription unit ratio. The ServiceNow® OT Asset Management licensing is based on resource categories. A resource category is a group of related model categories. The OT Asset Management application supports some default resource categories. These resource categories enable assets of the Industrial and Hardware model categories to use the features and workflows of the OT Asset Management application. Any asset of the Industrial and Hardware model category is counted toward a Subscription Unit based on the predefined ratio of number of assets to subscription units. When you create a custom model category with a licensable Industrial or Hardware model category as its parent, the custom model category is automatically associated with the resource category of the parent model category. Based on the resource category, the assets of these custom model categories are licensed and counted toward a Subscription Unit. Note: When the OT Asset Management application is activated on your ServiceNow instance, all the OT Asset Management license resource categories are opted in by default. {#licensing-ot-asset-management__table_u3k_gqm_1bc__entry__3} | Resource category | Subscription unit ratio | Model category | |-|-|-| | Unclassed OT | 1:1 | * Industrial * Industrial General {#licensing-ot-asset-management__ul_nvw_lqm_1bc} | | OT Supervisory System | 1:1 | * OT Supervisory * OT Supervisory EWS * OT Supervisory Historian * OT Supervisory HMI * OT Supervisory OPC * OT Supervisory SCADA {#licensing-ot-asset-management__ul_zvg_pqm_1bc} | | OT Control System | 3:1 | * OT Control * OT Control 3D Printer * OT Control CNC * OT Control DCS * OT Control DPU * OT Control IED * OT Control Module * OT Control PLC * OT Control RTU * OT Control SCADA * OT Control Server {#licensing-ot-asset-management__ul_fqn_wqm_1bc} | | OT Field Devices | 10:1 | * OT Field Actuator * OT Field Device * OT Field Drive * OT Field Robot * OT Field Sensor {#licensing-ot-asset-management__ul_xgx_jrm_1bc} | | Industrial Consumable | 25:1 | Any consumable asset created using any of the preceding model categories. | | Operational Equipment | 1:1 | Not applicable | | Hardware resource categories ||| | OT Servers | 1:1 | Any model category which contains Server in the name and belongs to the alm_asset or alm_hardware class. Examples: * AIX Server * ESX Server * HPUX Server * Linux Server * Netware Server * OS/X Server * Solaris Server * UNIX Server * Windows Server {#licensing-ot-asset-management__ul_uty_lsj_pdc} | | OT Network Gear | 5:1 | * IP Router * IP Switch * Network Gear {#licensing-ot-asset-management__ul_dkg_cwj_pdc} | | OT Storage | 3:1 | Storage Device | | OT End User Computers | 4:1 | Computer | | OT Mobile Devices | 10:1 | Mobile Device | | OT Monitors | 15:1 | Monitor | | OT Printers | 10:1 | Printer | | OT Unclassified Hardware | 1:1 | Hardware | [Table 1. OT Asset Management license resource categories] {#licensing-ot-asset-management__table_u3k_gqm_1bc} The Subscription unit ratio is the ratio of the number of assets to the number of subscription units. For example, the subscription unit ratio of Industrial Consumable is 25:1, where 25 assets require a single unit of license. If 1 license costs $100, then 25 industrial consumable assets cost $100 and 50 industrial consumable assets cost $200. You can view the subscription details of your OT Asset Management application using the ITAM License Report. For more details, see [View the license report for the OT Asset Management application](https://www.servicenow.com/docs/J0XBurhksmxUD~wd2E5NEg "View details of the subscriptions consumed by your organization for the OT Asset Management application by using the ITAM License Report."). ## OT hardware assets in OT Asset Management licensing {#licensing-ot-asset-management__section_pst_rmk_pdc} The OT Asset Management licensing model includes a few default hardware resource categories to license OT hardware assets. In the OT Asset Management licensing model, only hardware assets with the OT entity flag set to true are licensed and counted toward a Subscription unit under the hardware resource categories of OT Asset Management licensing. The OT Asset Management workflows support OT hardware assets. Note: Non-OT Hardware assets with the OT entity flag set to false can't use the features and workflows of the OT Asset Management application even if you have installed the application. The non-OT hardware assets aren't licensed under OT Asset Management. The Hardware Asset Management (HAM) licensing model includes default resource categories equivalent to the hardware resource categories of OT Asset Management. {#licensing-ot-asset-management__table_ogc_1tr_pdc__entry__2} | OTAM hardware resource category | Equivalent HAM resource category | |-|-| | OT Servers | Servers | | OT Network Gear | Network Gear | | OT Storage | Storage | | OT End User Computers | End User Computers | | OT Mobile Devices | Mobile Devices | | OT Monitors | Monitors | | OT Printers | Printers | | OT Unclassified hardware | Unclassified Hardware | [Table 2. Comparison of resource categories] {#licensing-ot-asset-management__table_ogc_1tr_pdc} When both OT Asset Management and Hardware Asset Management applications or licensed HAM solutions are activated, and HAM resource categories are opted in, consider the following points: * OT hardware assets are licensed only under the hardware resource categories of OT Asset Management licensing. * Non-OT hardware assets are licensed only under the resource categories of HAM licensing. * OT Asset Management workflows support only OT hardware assets. * HAM workflows support both OT hardware assets and non-OT hardware assets. {#licensing-ot-asset-management__ul_kx2_xqr_pdc} For more details on licensing hardware assets, see [Licensing framework for Hardware Asset Management solutions](https://www.servicenow.com/docs/QyBJ3UWjpJMuYkcZMiUTyQ "Manage the subscription units purchased and consumed by your organization for all the Hardware Asset Management solutions with the improved HAM licensing framework. When more than one Hardware Asset Management solution is activated on a ServiceNow instance, any licensable and opted-in resource category is licensed only under one solution."). * **[View the license report for the OT Asset Management application](https://www.servicenow.com/docs/J0XBurhksmxUD~wd2E5NEg)** View details of the subscriptions consumed by your organization for the OT Asset Management application by using the ITAM License Report. **Related concepts** * [Installing OT Asset Management](https://www.servicenow.com/docs/RHiBAo6NFYEXtocW1v1_bg "Install the OT Asset Management application so that you can manage the life cycles of your Operational Technology (OT) assets. You can install the application from either the ServiceNow Store or the Admin Home page.") * [OT Asset Workspace](https://www.servicenow.com/docs/gRUo~wiEmUoI46RXZduGlw "The OT Asset Workspace is the intuitive and streamlined user interface of the OT Asset Management application to manage your Operational Technology (OT) and Operational Equipment (OE) assets.") * [Asset and Configuration Item (CI) synchronization for Operational Technology (OT) assets](https://www.servicenow.com/docs/E6dlqFRCG_xuaqgVclujKw "Maintain synchronization between asset and CI for OT assets through MAC address on the asset and the Network Adapter CI.") **Related reference** * [Installed with OT Asset Management](https://www.servicenow.com/docs/5CxtNJqI6PQ01nWe7v0LSg "Several types of components are installed with activation of the com.sn_otam plugin, including user roles and applications.")