Trigger Workflow Block

What it does: Launches another published workflow from inside the current workflow, optionally passing in variables and waiting for it to finish.

⚡

In simple terms: Like calling a function in code. Your workflow says "run that other workflow now" and can either wait for the result or continue immediately.

When to Use This

✅ Shared sub-workflows — Extract common logic (e.g. "Send onboarding email + Slack alert") into one workflow and call it from many others
✅ Modular automation — Break a large workflow into smaller, testable pieces
✅ Fan-out — Trigger multiple child workflows in parallel from one parent
✅ Conditional sub-flows — Use inside a Switch branch to run specialised workflows per case

How It Works

Select the target workflow from the dropdown (only published workflows appear)
Optionally map input variables — values from the current workflow are passed to the target
Choose whether to wait for completion or fire-and-forget

Configuration

Target Workflow

Select the workflow you want to trigger from the dropdown. Only published workflows are listed — draft workflows cannot be triggered.

⚠️

The target workflow must be published before it appears in the dropdown. Publish it first from its own editor.

Wait for Completion

Setting	Behaviour
Off (default)	Fire-and-forget — the current workflow continues immediately without waiting
On	The current workflow pauses until the triggered workflow finishes, then resumes

Use On when you need the result of the sub-workflow before continuing. Use Off for background tasks like logging, notifications, or parallel processing.

Input Variables

Pass values from the current workflow into the triggered workflow's variables:

Field	Description
Variable ID	The ID of a variable in the target workflow to populate
Value	The value to set — supports `{{variable}}` references from the current workflow

You can add as many mappings as needed. Variables not listed keep their default values in the target workflow.

Example: Shared Notification Sub-Workflow

Parent workflow (Order Processing):

[Process Order] → [Trigger Workflow: "Send Notifications"]
                    Input Variables:
                      orderId  = {{order.id}}
                      customer = {{customerName}}
                      amount   = {{orderTotal}}
                    Wait for completion: Off

Child workflow ("Send Notifications"):

[WhatsApp message to {{customer}}] → [Slack alert to #orders]

The parent triggers the child immediately and continues to the next step without waiting.

Tips

Only published workflows appear — if you don't see a workflow in the dropdown, check that it's published.
Avoid circular triggers — don't set up Workflow A to trigger Workflow B which triggers Workflow A. This causes infinite loops.
Use Wait for completion: On sparingly — it holds up the parent workflow and counts against execution time limits.
Input variable IDs must exactly match variable IDs in the target workflow (found in the target workflow's Variables panel).

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