Workflow Studio flow logic

  • Release version: Zurich
  • Updated July 31, 2025
  • 2 minutes to read
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    Summary of Workflow Studio Flow Logic

    Workflow Studio flow logic enables ServiceNow customers to create and manage conditional and repeated actions within workflows through a graphical interface with minimal scripting. This functionality allows the construction of complex, automated processes by combining various flow logic elements, enhancing workflow flexibility and control.

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    Key Features

    • Assign Subflow Outputs: Define data returned by subflows to be used by parent flows or other processes.
    • Call a Workflow: Run published, active workflows using flow data as inputs, such as the current record.
    • Do the Following Until: Repeat actions until specified end conditions are met, using flow data to define these conditions.
    • Do the Following in Parallel: Execute actions and subflows concurrently within isolated flow logic blocks.
    • Dynamic Flow: Identify and execute flows or subflows at runtime based on dynamic data, supported by input templates.
    • End Flow: Stop the current flow, often used to define exit points in conditional branches.
    • For Each: Apply actions to each record in a list, enabling batch processing within flows.
    • Get Flow Outputs: Retrieve runtime values and outputs from dynamic flows or subflows.
    • If Flow Logic: Conditionally execute actions based on specified criteria.
    • Make a Decision: Use decision tables for branching on multiple conditions, offering a more readable and maintainable alternative to nested if/else structures.
    • Set Flow Variables: Assign values to flow variables (data pills) for use throughout the flow.
    • Try: Continue flow execution despite errors within a block, with error-handling sequences.
    • Wait for a Duration: Pause flows to allow user interaction or wait for specific times before proceeding.
    • Additional Loop Controls: Includes logic like Exit Loop (break), Skip Iteration (continue), and Go Back to Flow Logic (repeat steps), enhancing loop management.
    • Append to Flow Variables: Add values to arrays of objects within flow variables, enabling dynamic data construction.

    Using Flow Logic Inputs and Outputs

    Each flow logic element includes inputs to configure its behavior, such as selecting workflows to run or defining conditions. Outputs from flow logic elements provide data back to the flow, like decision results or subflow outputs, which can be used in subsequent steps. Understanding these inputs and outputs allows customers to design precise and dynamic workflows.

    Practical Benefits for ServiceNow Customers

    • Build sophisticated workflows that automate complex business processes with minimal scripting.
    • Leverage decision tables for clear, maintainable branching logic.
    • Handle errors gracefully to improve flow robustness.
    • Incorporate parallel processing and dynamic flow execution to optimize performance and flexibility.
    • Use loop controls to efficiently process lists and manage iterations.
    • Enable user interaction and timing controls within automated processes.

    Enable flows and subflows to specify conditional or repeated actions. Combine the elements of flow logic to create workflows in a graphical interface with little or no scripting.

    The system provides these flow logic options.

    Flow logic option Description
    Assign subflow outputs Specify the data the subflow returns when it completes running. Use subflow output as data for a parent flow or as input for another process.
    Call a Workflow Run a published and active workflow from your flow. You can use the flow data as a workflow input. For example, you can specify the current record as a workflow input.
    Do the following until Apply one or more actions repeatedly until an end condition is met. You can use the flow data to specify the end conditions.
    Do the following in parallel Run actions and subflows in separate paths within an isolated flow logic block.
    Dynamic Flow Identify and run a flow or subflow dynamically by using runtime data. Build templates to provide expected inputs for dynamically called flows or subflows.
    End Flow Stop running the current flow. Use End Flow within a branch of the flow to specify an exit condition. For example, end the flow when it reaches a specific If flow logic block.
    For each Apply one or more actions to each record in a list of records.
    Get Flow Outputs Use this flow logic to access flow contexts and derive the runtime values for dynamic flow outputs.
    If Selectively apply one or more actions only when a list of conditions is met.
    Make a decision You can use the decision table branching logic in situations where multiple conditional paths are required, as an alternative to nested If, Else If, or Else flow logic. For example, if you want to determine what kind of car insurance you need, you can add inputs such as your age, accident history, and car model to the decision table to determine a level of insurance coverage. This logic can save you time and present a more readable format than nested if conditions or switch case statements.
    Set Flow Variables Assign a value to one or more flow variables, which store flow data as data pills. Access flow variable values by referring to their data pill.
    Try Allow a flow to continue running when an error occurs within a flow logic block. Run a sequence of actions in response to errors within the flow logic block.
    Wait for a duration of time Use this flow logic to give your users time to act during automated processes or to wait for a specific date and time to complete actions

    Flow logic inputs

    Each flow logic option displays one or more fields that are used to determine its behavior. For example, the Call Workflow flow logic has an input where you are able to select a workflow to run. Use these inputs to define the behavior of the flow and enable optional functionality depending on your needs. See flow logic option documentation for a list of the available inputs and how they control the function of that element.

    Flow logic outputs

    Flow logic options may also have outputs. These represent information that is returned by the flow logic. For example, the Make a decision flow logic has an output that contains a decision answer record representing the decision reached by the flow. See the documentation for a flow logic option to see definitions for its outputs.