In flow designer what is subflw and input output why we use all this give simple example

[UmesH77]

Hello @kumkumr 

In Flow Designer, a Subflow is just a reusable set of steps that you can call from different flows.
Instead of repeating the same logic in multiple flows, you build it once in a subflow and reuse it.

Inputs are the values you pass to the subflow so it knows what to work on (for example, which record or which user).

Outputs are the values the subflow sends back after it finishes, so the main flow knows what happened.

 

Then any flow can call this subflow instead of rebuilding the same steps again.

In short:

• Subflow = reusable logic

• Input = what you give to the subflow

• Output = what you get back

Simple use case

Let’s say you want to check whether approval is required for a request based on its cost.

You create a Subflow that:

• Takes Request Cost as an input

• Checks if the cost is greater than 10,000

• Sends back an output like approval_required = yes / no

Now, in any main flow:

• You pass the cost to the subflow

• The subflow does the check

• The main flow uses the output to decide whether to trigger approval or skip it

This way, the same approval-check logic can be reused in multiple flows without rebuilding it every time.

[Ankur Bawiskar]

@kumkumr 

subflow is reusable component which can be used by multiple flows

Subflows are just like Flows, but without triggers

It accepts inputs and will have outputs

Based on the input, it does some processing and sets output variables

these output variables are then used by the main flow which calls this subflow

Flows and Subflows 

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[VaishnaviK43271]

Hi @kumkumr !!

Subflow:-
A Subflow is a reusable set of actions in Flow Designer. It works like a function. You build it once and call it from multiple flows or other subflows.

Why we use Subflows

• Reuse common logic

• Keep main flows simple

• Easier maintenance

Inputs:-
Inputs are the values passed into the subflow from the calling flow.

Example:

• Text to translate

• Incident number

• JSON payload

They make the subflow dynamic instead of hard-coded.

Outputs:-
Outputs are the values returned from the subflow back to the calling flow.

Example:

• Translated text

• API response

• Status or result

Simple example:-

Subflow: Translate Text

• Input: input (JSON or String) → text to translate

• Actions: call translation API

• Output: output → translated text

Main Flow:

1. Calls the Translate Text subflow

2. Passes text as input

3. Receives translated text as output

4. Uses the output in next steps

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