---
title: "Recursion in Nested Subflows"
slug: "recursion-in-nested-subflows"
updated: 2025-09-26T18:09:45Z
published: 2025-09-26T18:09:45Z
canonical: "help.hyperscience.ai/recursion-in-nested-subflows"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.hyperscience.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Recursion in Nested Subflows

When customizing flows, you can connect one subflow to another in a “nested” manner. However, the more subflows are nested, the greater the potential for recursion-related errors.

In v41.2 and later, we’ve limited the number of subflows that can be nested in a single flow to 100. If you are using an on-premise deployment of Hyperscience v42 or later, you can adjust this maximum by adding the `HYPERFLOW_ENGINE_MAX_SUBFLOWS_DEPTH_LIMIT` variable to your “.env” file:

```bash
HYPERFLOW_ENGINE_MAX_SUBFLPOWS_DEPTH_LIMIT=<maximum_number_of_subflows_nested_in_a_flow>
```

We recommend increasing the value of this variable (e.g., `HYPERFLOW_ENGINE_MAX_SUBFLOWS_DEPTH_LIMIT=120`) only if your use case requires more than 100 nested subflows to be nested in a single flow.

If you are using a SaaS deployment of Hyperscience v41.2 or later and need to increase this limit, contact your Hyperscience representative.