Library functions

  • Release version: Australia
  • Updated March 12, 2026
  • 1 minute to read

    • Library functions can speed implementation and reduce maintenance costs by enabling code reuse across rules.

    Library functions enable efficient code reuse across rules and enrichments. They are designed to minimize redundant logic, speed up implementation, and reduce maintenance costs, especially in complex scenarios that involve high-SKU or physics-driven configurations.

    Attributes and capabilities

    Centralized management: Search and manage library functions through a dedicated UI.

    Reusable and namespaced: Define a library function once and invoke it using fn.functionName(params).

    Configurable parameters: Define input parameters with data types and default values. Parameter schemas can be modified post-creation, allowing flexibility in managing function inputs.

    Customized output: Specify return types.

    Callable across modules: Library functions are callable in both the configurator and Transaction Manager.

    Managed table queries: Library functions support managed table lookups.

    Enabling library functions

    Submit a support ticket to enable library functions.

    Note:
    Submit a support ticket by using the ServiceNow Support portal. For step-by-step instructions, see Create a case on Now Support for CPQ (Logik.ai) Customers.

    Once library functions are enabled, turn on the new UI by navigating to Utilities > Settings > Admin Version > New, and clicking Save.

    This setting can be toggled at any time.

    Supported input/output data types

    Table 1. Supported input/output data types
    Type Description
    TEXT Plain text strings
    NUMBER Numeric values
    BOOLEAN Logical true/false values
    DATE Dates (without time component)
    JSON OBJECT JSON formatted objects
    ARRAY Ordered collections of values
    Note:
    Empty MAP or ARRAY types are not supported. Unsupported types default to TEXT.

    Usage examples

    Library functions can be found in the function library (in the Utilities section).

    Function library

    To add a function:

    1. On the Function Library tab, click Add Function.
    2. Name the function, specify the return type, and enter a description.

    Script content:

    Sccript parameters

    Calling the function:

    Code

    Limitations

    • Recursive calls are not supported.
    • External API calls and async operations are not supported.
    • Parameters are passed by copy, not by reference.
    • Functions must be free of side effects, external calls, and Logik field references.

    General guidelines

    • When a library function changes, redeploy the affected blueprints.
    • When defining a function, name and describe its inputs to provide visibility into its usage.