Adding a Subflow Diagram Element

Functions

A subflow allows you to use other activated flows within a flow. For complex service scenarios, you can break down a flow into subflows. By defining and activating these subflows, you can then call them within the main flow to achieve comprehensive functionality.

Using a Subflow Diagram Element

1. On the flow designer, choose Basic and drag the Subflow diagram element to the canvas.
2. Click the subflow diagram element in the canvas, click , and configure basic information.

   Table 1 Parameter description

   Parameter	Description
   Label	Label of the diagram element, which is displayed on the flow design page. The system automatically assigns a value in a specific Flowsequence number format, with the sequence number starting at 0 for each type of diagram element.
   Name	Diagram element name, which must be unique in the current flow. The naming requirements are as follows: Value: 1–80 characters. Start with a letter and can contain letters, digits, and underscores (_). It cannot end with an underscore (_).
   Description	Description of the diagram element. Value: 1–255 characters.

3. Click to select a flow instance and enter the input parameters and output parameters.
   Figure 1 Configuring a subflow diagram element
   

   Table 2 Parameters for configuring a subflow diagram element

   Parameter	Description
   Flow Instance	Select a flow. Only the activated flows can be called by other flows as sub-flows.
   Start New Transaction to Run Subflow	If this option is selected, multiple sub-flows can be executed concurrently in a new transaction, improving efficiency. If a sub-flow fails to be executed, the execution of other sub-flows is not affected.
   Input Parameters/Target	Input parameter name of a sub-flow. Click Add Row and select a value for Target.
   Input Parameters/Source	Variable in a flow, which is used to assign a value to the target. You can either type in the value directly or drag a variable from the context to pass its value to an input parameter in a sub-flow.
   Output Parameters/Source	Output parameter name of a sub-flow. Click Add Row and select a value for Source.
   Output Parameters/Target	Variable in a flow, which assigns the output parameters from a sub-flow to a variable within the main flow. You can do this by setting the output of the sub-flow to a variable in the context.

4. After the configuration is complete, click to save the configuration.